1012220131 has 8 divisors (see below), whose sum is σ = 1093058624. Its totient is φ = 931806720.

The previous prime is 1012220113. The next prime is 1012220149. The reversal of 1012220131 is 1310222101.

It is an interprime number because it is at equal distance from previous prime (1012220113) and next prime (1012220149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012220131 - 2¹³ = 1012211939 is a prime.

It is a super-2 number, since 2×1012220131² = 2049179187203314322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012220191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101310 + ... + 110851.

It is an arithmetic number, because the mean of its divisors is an integer number (136632328).

Almost surely, 2^1012220131 is an apocalyptic number.

1012220131 is a deficient number, since it is larger than the sum of its proper divisors (80838493).

1012220131 is a wasteful number, since it uses less digits than its factorization.

1012220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212541.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012220131 is about 31815.4071323942. The cubic root of 1012220131 is about 1004.0568963354.

Adding to 1012220131 its reverse (1310222101), we get a palindrome (2322442232).

The spelling of 1012220131 in words is "one billion, twelve million, two hundred twenty thousand, one hundred thirty-one".