1001012252 has 12 divisors (see below), whose sum is σ = 1755257616. Its totient is φ = 499510080.

The previous prime is 1001012249. The next prime is 1001012269. The reversal of 1001012252 is 2522101001.

It is a super-2 number, since 2×1001012252² = 2004051057308223008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246749 + ... + 250772.

It is an arithmetic number, because the mean of its divisors is an integer number (146271468).

Almost surely, 2^1001012252 is an apocalyptic number.

It is an amenable number.

1001012252 is a deficient number, since it is larger than the sum of its proper divisors (754245364).

1001012252 is a wasteful number, since it uses less digits than its factorization.

1001012252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498028 (or 498026 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1001012252 is about 31638.7776628618. Note that the first 3 decimals coincide. The cubic root of 1001012252 is about 1000.3373035469.

Adding to 1001012252 its reverse (2522101001), we get a palindrome (3523113253).

The spelling of 1001012252 in words is "one billion, one million, twelve thousand, two hundred fifty-two".