1012220031 has 24 divisors (see below), whose sum is σ = 1420900624. Its totient is φ = 640765440.

The previous prime is 1012220021. The next prime is 1012220039. The reversal of 1012220031 is 1300222101.

It is a de Polignac number, because none of the positive numbers 2^k-1012220031 is a prime.

It is a super-2 number, since 2×1012220031² = 2049178782315281922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012219989 and 1012220016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012220039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150615 + ... + 157191.

Almost surely, 2^1012220031 is an apocalyptic number.

1012220031 is a deficient number, since it is larger than the sum of its proper divisors (408680593).

1012220031 is an equidigital number, since it uses as much as digits as its factorization.

1012220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699 (or 6670 counting only the distinct ones).

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

The square root of 1012220031 is about 31815.4055608285. The cubic root of 1012220031 is about 1004.0568632709.

Adding to 1012220031 its reverse (1300222101), we get a palindrome (2312442132).

The spelling of 1012220031 in words is "one billion, twelve million, two hundred twenty thousand, thirty-one".