1021133212 has 24 divisors (see below), whose sum is σ = 1994775552. Its totient is φ = 453356400.

The previous prime is 1021133189. The next prime is 1021133221. The reversal of 1021133212 is 2123311201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267964 + ... + 271747.

It is an arithmetic number, because the mean of its divisors is an integer number (83115648).

Almost surely, 2^1021133212 is an apocalyptic number.

It is an amenable number.

1021133212 is a deficient number, since it is larger than the sum of its proper divisors (973642340).

1021133212 is a wasteful number, since it uses less digits than its factorization.

1021133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539769 (or 539767 counting only the distinct ones).

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

The square root of 1021133212 is about 31955.1750425498. The cubic root of 1021133212 is about 1006.9953549039.

Adding to 1021133212 its reverse (2123311201), we get a palindrome (3144444413).

The spelling of 1021133212 in words is "one billion, twenty-one million, one hundred thirty-three thousand, two hundred twelve".