Search a number
-
+
11211222010021 = 1143910993211193
BaseRepresentation
bin1010001100100101000011…
…1001111100100010100101
31110200210010100010112112121
42203021100321330202211
52432141040313310041
635502210404145541
72234661350510605
oct243112071744245
943623110115477
1011211222010021
11363271a604360
1213109876982b1
136342a1660137
142aa8a9bd8c05
15146969e237d1
hexa3250e7c8a5

11211222010021 has 16 divisors (see below), whose sum is σ = 12259456894080. Its totient is φ = 10167830392320.

The previous prime is 11211222010007. The next prime is 11211222010031. The reversal of 11211222010021 is 12001022211211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-11211222010021 is a prime.

It is a super-2 number, since 2×112112220100212 (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211222009977 and 11211222010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211222010031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52979601 + ... + 53190793.

It is an arithmetic number, because the mean of its divisors is an integer number (766216055880).

Almost surely, 211211222010021 is an apocalyptic number.

11211222010021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11211222010021 is a deficient number, since it is larger than the sum of its proper divisors (1048234884059).

11211222010021 is a wasteful number, since it uses less digits than its factorization.

11211222010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222636.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11211222010021 its reverse (12001022211211), we get a palindrome (23212244221232).

The spelling of 11211222010021 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, ten thousand, twenty-one".

Divisors: 1 11 439 4829 10993 120923 211193 2323123 4825927 53085197 92713727 1019850997 2321644649 25538091139 1019202000911 11211222010021