1220010120 has 128 divisors (see below), whose sum is σ = 4647686400. Its totient is φ = 278857728.

The previous prime is 1220010107. The next prime is 1220010149. The reversal of 1220010120 is 210100221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73129 + ... + 88248.

It is an arithmetic number, because the mean of its divisors is an integer number (36310050).

Almost surely, 2^1220010120 is an apocalyptic number.

1220010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220010120 is an abundant number, since it is smaller than the sum of its proper divisors (3427676280).

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

1220010120 is a wasteful number, since it uses less digits than its factorization.

1220010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161404 (or 161394 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1220010120 is about 34928.6432602241. The cubic root of 1220010120 is about 1068.5326846546.

Adding to 1220010120 its reverse (210100221), we get a palindrome (1430110341).

The spelling of 1220010120 in words is "one billion, two hundred twenty million, ten thousand, one hundred twenty".