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11211220211201 = 103108846798167
BaseRepresentation
bin1010001100100101000011…
…0011000101011000000001
31110200210010012202011000122
42203021100303011120001
52432141034333224301
635502210301430025
72234661326306333
oct243112063053001
943623105664018
1011211220211201
11363271959592a
121310986b6b315
136342a118044a
142aa8a988b453
15146969bba81b
hexa3250cc5601

11211220211201 has 4 divisors (see below), whose sum is σ = 11320067009472. Its totient is φ = 11102373412932.

The previous prime is 11211220211143. The next prime is 11211220211221. The reversal of 11211220211201 is 10211202211211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11211220211201 - 242 = 6813173700097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211220211201.

It is not an unprimeable number, because it can be changed into a prime (11211220211221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54423398981 + ... + 54423399186.

It is an arithmetic number, because the mean of its divisors is an integer number (2830016752368).

Almost surely, 211211220211201 is an apocalyptic number.

It is an amenable number.

11211220211201 is a deficient number, since it is larger than the sum of its proper divisors (108846798271).

11211220211201 is a wasteful number, since it uses less digits than its factorization.

11211220211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108846798270.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211220211201 its reverse (10211202211211), we get a palindrome (21422422422412).

The spelling of 11211220211201 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, two hundred eleven thousand, two hundred one".

Divisors: 1 103 108846798167 11211220211201