1012231213 has 32 divisors (see below), whose sum is σ = 1245047040. Its totient is φ = 803727360.

The previous prime is 1012231183. The next prime is 1012231261. The reversal of 1012231213 is 3121322101.

It is not a de Polignac number, because 1012231213 - 2⁹ = 1012230701 is a prime.

It is a super-2 number, since 2×1012231213² = 2049224057142902738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012231273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1329753 + ... + 1330513.

It is an arithmetic number, because the mean of its divisors is an integer number (38907720).

Almost surely, 2^1012231213 is an apocalyptic number.

It is an amenable number.

1012231213 is a deficient number, since it is larger than the sum of its proper divisors (232815827).

1012231213 is a wasteful number, since it uses less digits than its factorization.

1012231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1012231213 is about 31815.5812928194. The cubic root of 1012231213 is about 1004.0605605311.

Adding to 1012231213 its reverse (3121322101), we get a palindrome (4133553314).

The spelling of 1012231213 in words is "one billion, twelve million, two hundred thirty-one thousand, two hundred thirteen".