1220011210120 has 16 divisors (see below), whose sum is σ = 2745025222860. Its totient is φ = 488004484032.

The previous prime is 1220011210097. The next prime is 1220011210147. The reversal of 1220011210120 is 210121100221.

It can be written as a sum of positive squares in 2 ways, for example, as 1197706982404 + 22304227716 = 1094398^2 + 149346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220011210120.

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, 15250140087 + ... + 15250140166.

Almost surely, 2^{1220011210120} is an apocalyptic number.

1220011210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220011210120 is an abundant number, since it is smaller than the sum of its proper divisors (1525014012740).

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

1220011210120 is a wasteful number, since it uses less digits than its factorization.

1220011210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30500280264 (or 30500280260 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220011210120 its reverse (210121100221), we get a palindrome (1430132310341).

The spelling of 1220011210120 in words is "one trillion, two hundred twenty billion, eleven million, two hundred ten thousand, one hundred twenty".