220245129 has 16 divisors (see below), whose sum is σ = 351388800. Its totient is φ = 135535248.

The previous prime is 220245121. The next prime is 220245143. The reversal of 220245129 is 921542022.

It is a happy number.

220245129 is a `hidden beast` number, since 2 + 202 + 451 + 2 + 9 = 666.

It is not a de Polignac number, because 220245129 - 2³ = 220245121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (220245121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313389 + ... + 314090.

It is an arithmetic number, because the mean of its divisors is an integer number (21961800).

Almost surely, 2^220245129 is an apocalyptic number.

It is an amenable number.

220245129 is a deficient number, since it is larger than the sum of its proper divisors (131143671).

220245129 is a wasteful number, since it uses less digits than its factorization.

220245129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627501 (or 627495 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 220245129 is about 14840.6579705888. The cubic root of 220245129 is about 603.9052021815.

The spelling of 220245129 in words is "two hundred twenty million, two hundred forty-five thousand, one hundred twenty-nine".