220112129 has 2 divisors, whose sum is σ = 220112130. Its totient is φ = 220112128.

The previous prime is 220112119. The next prime is 220112143. The reversal of 220112129 is 921211022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194881600 + 25230529 = 13960^2 + 5023^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112129 - 2¹² = 220108033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220112129.

It is not a weakly prime, because it can be changed into another prime (220112119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110056064 + 110056065.

It is an arithmetic number, because the mean of its divisors is an integer number (110056065).

Almost surely, 2^220112129 is an apocalyptic number.

It is an amenable number.

220112129 is a deficient number, since it is larger than the sum of its proper divisors (1).

220112129 is an equidigital number, since it uses as much as digits as its factorization.

220112129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 220112129 is about 14836.1763605048. The cubic root of 220112129 is about 603.7836171015.

The spelling of 220112129 in words is "two hundred twenty million, one hundred twelve thousand, one hundred twenty-nine".