10303232121021 has 16 divisors (see below), whose sum is σ = 15996392728704. Its totient is φ = 5776475150784.

The previous prime is 10303232120981. The next prime is 10303232121031. The reversal of 10303232121021 is 12012123230301.

It is not a de Polignac number, because 10303232121021 - 2¹⁰ = 10303232119997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303232121031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4628584746 + ... + 4628586971.

It is an arithmetic number, because the mean of its divisors is an integer number (999774545544).

Almost surely, 2^{10303232121021} is an apocalyptic number.

It is an amenable number.

10303232121021 is a deficient number, since it is larger than the sum of its proper divisors (5693160607683).

10303232121021 is an equidigital number, since it uses as much as digits as its factorization.

10303232121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9257171780.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 10303232121021 its reverse (12012123230301), we get a palindrome (22315355351322).

The spelling of 10303232121021 in words is "ten trillion, three hundred three billion, two hundred thirty-two million, one hundred twenty-one thousand, twenty-one".