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122112102101 = 1111101100191
BaseRepresentation
bin111000110111001110…
…0101100111011010101
3102200012012110111220012
41301232130230323111
54000041144231401
6132033022050005
711552023512323
oct1615634547325
9380165414805
10122112102101
1147873109750
121b7bb119905
13b690951822
145ca5a62d13
15329a60d8bb
hex1c6e72ced5

122112102101 has 4 divisors (see below), whose sum is σ = 133213202304. Its totient is φ = 111011001900.

The previous prime is 122112102083. The next prime is 122112102109. The reversal of 122112102101 is 101201211221.

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 122112102101 - 26 = 122112102037 is a prime.

It is a super-2 number, since 2×1221121021012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112102109) 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, 5550550085 + ... + 5550550106.

It is an arithmetic number, because the mean of its divisors is an integer number (33303300576).

Almost surely, 2122112102101 is an apocalyptic number.

122112102101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122112102101 is a deficient number, since it is larger than the sum of its proper divisors (11101100203).

122112102101 is a wasteful number, since it uses less digits than its factorization.

122112102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101100202.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122112102101 its reverse (101201211221), we get a palindrome (223313313322).

The spelling of 122112102101 in words is "one hundred twenty-two billion, one hundred twelve million, one hundred two thousand, one hundred one".

Divisors: 1 11 11101100191 122112102101