111020201222120 has 16 divisors (see below), whose sum is σ = 249795452749860. Its totient is φ = 44408080488832.

The previous prime is 111020201222093. The next prime is 111020201222179. The reversal of 111020201222120 is 21222102020111.

It can be written as a sum of positive squares in 2 ways, for example, as 110992419666436 + 27781555684 = 10535294^2 + 166678^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387752515237 + ... + 1387752515316.

Almost surely, 2^{111020201222120} is an apocalyptic number.

111020201222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020201222120 is an abundant number, since it is smaller than the sum of its proper divisors (138775251527740).

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

111020201222120 is a wasteful number, since it uses less digits than its factorization.

111020201222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775505030564 (or 2775505030560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111020201222120 its reverse (21222102020111), we get a palindrome (132242303242231).

The spelling of 111020201222120 in words is "one hundred eleven trillion, twenty billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty".