220002131 has 2 divisors, whose sum is σ = 220002132. Its totient is φ = 220002130.

The previous prime is 220002127. The next prime is 220002157. The reversal of 220002131 is 131200022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220002131 - 2² = 220002127 is a prime.

It is a super-2 number, since 2×220002131² = 96801875289082322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110001065 + 110001066.

It is an arithmetic number, because the mean of its divisors is an integer number (110001066).

Almost surely, 2^220002131 is an apocalyptic number.

220002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

220002131 is an equidigital number, since it uses as much as digits as its factorization.

220002131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 220002131 is about 14832.4688100127. The cubic root of 220002131 is about 603.6830228316.

Adding to 220002131 its reverse (131200022), we get a palindrome (351202153).

The spelling of 220002131 in words is "two hundred twenty million, two thousand, one hundred thirty-one".