1012213252 has 18 divisors (see below), whose sum is σ = 1881703082. Its totient is φ = 476335104.

The previous prime is 1012213243. The next prime is 1012213253. The reversal of 1012213252 is 2523122101.

It can be written as a sum of positive squares in 3 ways, for example, as 441672256 + 570540996 = 21016^2 + 23886^2 .

It is not an unprimeable number, because it can be changed into a prime (1012213253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436653 + ... + 438964.

Almost surely, 2^1012213252 is an apocalyptic number.

It is an amenable number.

1012213252 is a deficient number, since it is larger than the sum of its proper divisors (869489830).

1012213252 is a wasteful number, since it uses less digits than its factorization.

1012213252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875655 (or 875636 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1012213252 is about 31815.2990242116. The cubic root of 1012213252 is about 1004.0546218226.

Adding to 1012213252 its reverse (2523122101), we get a palindrome (3535335353).

The spelling of 1012213252 in words is "one billion, twelve million, two hundred thirteen thousand, two hundred fifty-two".