111212011102220 has 48 divisors (see below), whose sum is σ = 266914026344448. Its totient is φ = 38129089563840.

The previous prime is 111212011102151. The next prime is 111212011102223. The reversal of 111212011102220 is 22201110212111.

It is a super-2 number, since 2×111212011102220² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111212011102223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501476 + ... + 14922315.

It is an arithmetic number, because the mean of its divisors is an integer number (5560708882176).

Almost surely, 2^{111212011102220} is an apocalyptic number.

111212011102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212011102220 is an abundant number, since it is smaller than the sum of its proper divisors (155702015242228).

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

111212011102220 is a wasteful number, since it uses less digits than its factorization.

111212011102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15475310 (or 15475308 counting only the distinct ones).

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

Adding to 111212011102220 its reverse (22201110212111), we get a palindrome (133413121314331).

The spelling of 111212011102220 in words is "one hundred eleven trillion, two hundred twelve billion, eleven million, one hundred two thousand, two hundred twenty".