111121002021012 has 24 divisors (see below), whose sum is σ = 260395137789696. Its totient is φ = 36881362615488.

The previous prime is 111121002020983. The next prime is 111121002021091. The reversal of 111121002021012 is 210120200121111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111121002020982 and 111121002021000.

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, 19871421028 + ... + 19871426619.

It is an arithmetic number, because the mean of its divisors is an integer number (10849797407904).

Almost surely, 2^{111121002021012} is an apocalyptic number.

111121002021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111121002021012 is an abundant number, since it is smaller than the sum of its proper divisors (149274135768684).

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

111121002021012 is a wasteful number, since it uses less digits than its factorization.

111121002021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39742847887 (or 39742847885 counting only the distinct ones).

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

Adding to 111121002021012 its reverse (210120200121111), we get a palindrome (321241202142123).

The spelling of 111121002021012 in words is "one hundred eleven trillion, one hundred twenty-one billion, two million, twenty-one thousand, twelve".