220650121 has 2 divisors, whose sum is σ = 220650122. Its totient is φ = 220650120.

The previous prime is 220650113. The next prime is 220650137. The reversal of 220650121 is 121056022.

220650121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182655225 + 37994896 = 13515^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 220650121 - 2³ = 220650113 is a prime.

It is not a weakly prime, because it can be changed into another prime (220650161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110325060 + 110325061.

It is an arithmetic number, because the mean of its divisors is an integer number (110325061).

Almost surely, 2^220650121 is an apocalyptic number.

It is an amenable number.

220650121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220650121 is an equidigital number, since it uses as much as digits as its factorization.

220650121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 220650121 is about 14854.2963818553. The cubic root of 220650121 is about 604.2751339608.

The spelling of 220650121 in words is "two hundred twenty million, six hundred fifty thousand, one hundred twenty-one".