1021231372 has 24 divisors (see below), whose sum is σ = 2131266816. Its totient is φ = 418641168.

The previous prime is 1021231319. The next prime is 1021231373. The reversal of 1021231372 is 2731321201.

It is a happy number.

1021231372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1021231373) 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, 792238 + ... + 793525.

It is an arithmetic number, because the mean of its divisors is an integer number (88802784).

Almost surely, 2^1021231372 is an apocalyptic number.

It is an amenable number.

1021231372 is an abundant number, since it is smaller than the sum of its proper divisors (1110035444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021231372 is a wasteful number, since it uses less digits than its factorization.

1021231372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585797 (or 1585795 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1021231372 is about 31956.7109071006. The cubic root of 1021231372 is about 1007.0276208530.

Adding to 1021231372 its reverse (2731321201), we get a palindrome (3752552573).

The spelling of 1021231372 in words is "one billion, twenty-one million, two hundred thirty-one thousand, three hundred seventy-two".