111211021012120 has 32 divisors (see below), whose sum is σ = 250228211411520. Its totient is φ = 44483801447680.

The previous prime is 111211021012057. The next prime is 111211021012141. The reversal of 111211021012120 is 21210120112111.

It is a super-2 number, since 2×111211021012120² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111211021012094 and 111211021012103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15993376 + ... + 21868015.

It is an arithmetic number, because the mean of its divisors is an integer number (7819631606610).

Almost surely, 2^{111211021012120} is an apocalyptic number.

111211021012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211021012120 is an abundant number, since it is smaller than the sum of its proper divisors (139017190399400).

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

111211021012120 is a wasteful number, since it uses less digits than its factorization.

111211021012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37934835 (or 37934831 counting only the distinct ones).

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

Adding to 111211021012120 its reverse (21210120112111), we get a palindrome (132421141124231).

Subtracting from 111211021012120 its reverse (21210120112111), we obtain a palindrome (90000900900009).

The spelling of 111211021012120 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-one million, twelve thousand, one hundred twenty".