101112111220 has 24 divisors (see below), whose sum is σ = 212382735264. Its totient is φ = 40435834656.

The previous prime is 101112111179. The next prime is 101112111229. The reversal of 101112111220 is 22111211101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101112111220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470722 + ... + 651001.

It is an arithmetic number, because the mean of its divisors is an integer number (8849280636).

Almost surely, 2^101112111220 is an apocalyptic number.

101112111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101112111220 is an abundant number, since it is smaller than the sum of its proper divisors (111270624044).

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

101112111220 is a wasteful number, since it uses less digits than its factorization.

101112111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126239 (or 1126237 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101112111220 its reverse (22111211101), we get a palindrome (123223322321).

The spelling of 101112111220 in words is "one hundred one billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty".