111210020111220 has 48 divisors (see below), whose sum is σ = 311393201779968. Its totient is φ = 29655515318400.

The previous prime is 111210020111219. The next prime is 111210020111327. The reversal of 111210020111220 is 22111020012111.

It is a happy number.

It is a super-2 number, since 2×111210020111220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111210020111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11645356 + ... + 18921795.

It is an arithmetic number, because the mean of its divisors is an integer number (6487358370416).

Almost surely, 2^{111210020111220} is an apocalyptic number.

111210020111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210020111220 is an abundant number, since it is smaller than the sum of its proper divisors (200183181668748).

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

111210020111220 is a wasteful number, since it uses less digits than its factorization.

111210020111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30627800 (or 30627798 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111210020111220 its reverse (22111020012111), we get a palindrome (133321040123331).

The spelling of 111210020111220 in words is "one hundred eleven trillion, two hundred ten billion, twenty million, one hundred eleven thousand, two hundred twenty".