1021020013332 has 72 divisors (see below), whose sum is σ = 2815816584672. Its totient is φ = 309369614400.

The previous prime is 1021020013271. The next prime is 1021020013357. The reversal of 1021020013332 is 2333100201201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4086982 + ... + 4329602.

It is an arithmetic number, because the mean of its divisors is an integer number (39108563676).

Almost surely, 2^{1021020013332} is an apocalyptic number.

1021020013332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021020013332 is an abundant number, since it is smaller than the sum of its proper divisors (1794796571340).

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

1021020013332 is a wasteful number, since it uses less digits than its factorization.

1021020013332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253269 (or 253264 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1021020013332 its reverse (2333100201201), we get a palindrome (3354120214533).

The spelling of 1021020013332 in words is "one trillion, twenty-one billion, twenty million, thirteen thousand, three hundred thirty-two".