1220120032120 has 32 divisors (see below), whose sum is σ = 2994840079920. Its totient is φ = 443680011520.

The previous prime is 1220120032111. The next prime is 1220120032123. The reversal of 1220120032120 is 212300210221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220120032094 and 1220120032103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120032123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386499597 + ... + 1386500476.

Almost surely, 2^{1220120032120} is an apocalyptic number.

1220120032120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220120032120 is an abundant number, since it is smaller than the sum of its proper divisors (1774720047800).

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

1220120032120 is a wasteful number, since it uses less digits than its factorization.

1220120032120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773000095 (or 2773000091 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1220120032120 its reverse (212300210221), we get a palindrome (1432420242341).

The spelling of 1220120032120 in words is "one trillion, two hundred twenty billion, one hundred twenty million, thirty-two thousand, one hundred twenty".