111121222120002 has 12 divisors (see below), whose sum is σ = 240762647926710. Its totient is φ = 37040407373328.

The previous prime is 111121222119991. The next prime is 111121222120039. The reversal of 111121222120002 is 200021222121111.

It can be written as a sum of positive squares in only one way, i.e., 109121235024321 + 1999987095681 = 10446111^2 + 1414209^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6173401228889 = 111121222120002 / (1 + 1 + 1 + 1 + 2 + 1 + 2 + 2 + 2 + 1 + 2 + 0 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3086700614427 + ... + 3086700614462.

Almost surely, 2^{111121222120002} is an apocalyptic number.

111121222120002 is an abundant number, since it is smaller than the sum of its proper divisors (129641425806708).

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

111121222120002 is a wasteful number, since it uses less digits than its factorization.

111121222120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173401228897 (or 6173401228894 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111121222120002 its reverse (200021222121111), we get a palindrome (311142444241113).

The spelling of 111121222120002 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty thousand, two".