1021331012 has 24 divisors (see below), whose sum is σ = 1969583616. Its totient is φ = 460420128.

The previous prime is 1021331011. The next prime is 1021331023. The reversal of 1021331012 is 2101331201.

It is a super-3 number, since 3×1021331012³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021331011) 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, 226148 + ... + 230619.

It is an arithmetic number, because the mean of its divisors is an integer number (82065984).

Almost surely, 2^1021331012 is an apocalyptic number.

It is an amenable number.

1021331012 is a deficient number, since it is larger than the sum of its proper divisors (948252604).

1021331012 is a wasteful number, since it uses less digits than its factorization.

1021331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456827 (or 456825 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1021331012 is about 31958.2698530443. The cubic root of 1021331012 is about 1007.0603711751.

Adding to 1021331012 its reverse (2101331201), we get a palindrome (3122662213).

The spelling of 1021331012 in words is "one billion, twenty-one million, three hundred thirty-one thousand, twelve".