220102131 has 4 divisors (see below), whose sum is σ = 293469512. Its totient is φ = 146734752.

The previous prime is 220102117. The next prime is 220102133. The reversal of 220102131 is 131201022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220102131 - 2¹⁰ = 220101107 is a prime.

It is a super-2 number, since 2×220102131² = 96889896141482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220102133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36683686 + ... + 36683691.

It is an arithmetic number, because the mean of its divisors is an integer number (73367378).

Almost surely, 2^220102131 is an apocalyptic number.

220102131 is a deficient number, since it is larger than the sum of its proper divisors (73367381).

220102131 is an equidigital number, since it uses as much as digits as its factorization.

220102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73367380.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 220102131 is about 14835.8394100233. The cubic root of 220102131 is about 603.7744752154.

Adding to 220102131 its reverse (131201022), we get a palindrome (351303153).

The spelling of 220102131 in words is "two hundred twenty million, one hundred two thousand, one hundred thirty-one".