1220372170 has 32 divisors (see below), whose sum is σ = 2271587328. Its totient is φ = 471776448.

The previous prime is 1220372137. The next prime is 1220372173. The reversal of 1220372170 is 712730221.

1220372170 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1220372173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18327 + ... + 52693.

It is an arithmetic number, because the mean of its divisors is an integer number (70987104).

Almost surely, 2^1220372170 is an apocalyptic number.

1220372170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220372170 is a deficient number, since it is larger than the sum of its proper divisors (1051215158).

1220372170 is a wasteful number, since it uses less digits than its factorization.

1220372170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34494.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 1220372170 is about 34933.8255849542. The cubic root of 1220372170 is about 1068.6383733944.

The spelling of 1220372170 in words is "one billion, two hundred twenty million, three hundred seventy-two thousand, one hundred seventy".