22120111212120 has 48 divisors (see below), whose sum is σ = 71890361440560. Its totient is φ = 5898696323136.

The previous prime is 22120111212107. The next prime is 22120111212137. The reversal of 22120111212120 is 2121211102122.

22120111212120 is a `hidden beast` number, since 221 + 2 + 0 + 111 + 212 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22120111212093 and 22120111212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30722376324 + ... + 30722377043.

It is an arithmetic number, because the mean of its divisors is an integer number (1497715863345).

Almost surely, 2^{22120111212120} is an apocalyptic number.

22120111212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120111212120 is an abundant number, since it is smaller than the sum of its proper divisors (49770250228440).

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

22120111212120 is a wasteful number, since it uses less digits than its factorization.

22120111212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61444753384 (or 61444753377 counting only the distinct ones).

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

Adding to 22120111212120 its reverse (2121211102122), we get a palindrome (24241322314242).

The spelling of 22120111212120 in words is "twenty-two trillion, one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty".