101222111100 has 72 divisors (see below), whose sum is σ = 319493801088. Its totient is φ = 24538692800.

The previous prime is 101222111083. The next prime is 101222111117. The reversal of 101222111100 is 1111222101.

It is an interprime number because it is at equal distance from previous prime (101222111083) and next prime (101222111117).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15333384 + ... + 15339983.

It is an arithmetic number, because the mean of its divisors is an integer number (4437413904).

Almost surely, 2^101222111100 is an apocalyptic number.

101222111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101222111100 is an abundant number, since it is smaller than the sum of its proper divisors (218271689988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101222111100 is a wasteful number, since it uses less digits than its factorization.

101222111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30673395 (or 30673388 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101222111100 its reverse (1111222101), we get a palindrome (102333333201).

The spelling of 101222111100 in words is "one hundred one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred".