220974129 has 8 divisors (see below), whose sum is σ = 327369120. Its totient is φ = 147316068.

The previous prime is 220974121. The next prime is 220974151. The reversal of 220974129 is 921479022.

220974129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220974129 - 2³ = 220974121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220974093 and 220974102.

It is not an unprimeable number, because it can be changed into a prime (220974121) 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, 4092087 + ... + 4092140.

It is an arithmetic number, because the mean of its divisors is an integer number (40921140).

Almost surely, 2^220974129 is an apocalyptic number.

It is an amenable number.

220974129 is a deficient number, since it is larger than the sum of its proper divisors (106394991).

220974129 is an equidigital number, since it uses as much as digits as its factorization.

220974129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8184236 (or 8184230 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 220974129 is about 14865.1985859591. The cubic root of 220974129 is about 604.5707667339.

The spelling of 220974129 in words is "two hundred twenty million, nine hundred seventy-four thousand, one hundred twenty-nine".