1021132021 has 48 divisors (see below), whose sum is σ = 1335277440. Its totient is φ = 773055360.

The previous prime is 1021131961. The next prime is 1021132027. The reversal of 1021132021 is 1202311201.

It is not a de Polignac number, because 1021132021 - 2⁷ = 1021131893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021131992 and 1021132010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021132027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3084826 + ... + 3085156.

It is an arithmetic number, because the mean of its divisors is an integer number (27818280).

Almost surely, 2^1021132021 is an apocalyptic number.

It is an amenable number.

1021132021 is a deficient number, since it is larger than the sum of its proper divisors (314145419).

1021132021 is a wasteful number, since it uses less digits than its factorization.

1021132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1021132021 is about 31955.1564070652. The cubic root of 1021132021 is about 1006.9949634003.

Adding to 1021132021 its reverse (1202311201), we get a palindrome (2223443222).

The spelling of 1021132021 in words is "one billion, twenty-one million, one hundred thirty-two thousand, twenty-one".