1021003113021 has 8 divisors (see below), whose sum is σ = 1405251596544. Its totient is φ = 658711685760.

The previous prime is 1021003113017. The next prime is 1021003113041. The reversal of 1021003113021 is 1203113001201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021003113021 - 2² = 1021003113017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021003113041) 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, 5489263956 + ... + 5489264141.

It is an arithmetic number, because the mean of its divisors is an integer number (175656449568).

Almost surely, 2^{1021003113021} is an apocalyptic number.

It is an amenable number.

1021003113021 is a deficient number, since it is larger than the sum of its proper divisors (384248483523).

1021003113021 is a wasteful number, since it uses less digits than its factorization.

1021003113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10978528131.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1021003113021 its reverse (1203113001201), we get a palindrome (2224116114222).

The spelling of 1021003113021 in words is "one trillion, twenty-one billion, three million, one hundred thirteen thousand, twenty-one".