21030121003331 has 8 divisors (see below), whose sum is σ = 23050679809728. Its totient is φ = 19027683801000.

The previous prime is 21030121003187. The next prime is 21030121003337. The reversal of 21030121003331 is 13330012103012.

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

It is a cyclic number.

It is not a de Polignac number, because 21030121003331 - 2³⁰ = 21029047261507 is a prime.

It is a super-2 number, since 2×21030121003331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21030121003337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4530398585 + ... + 4530403226.

It is an arithmetic number, because the mean of its divisors is an integer number (2881334976216).

Almost surely, 2^{21030121003331} is an apocalyptic number.

21030121003331 is a deficient number, since it is larger than the sum of its proper divisors (2020558806397).

21030121003331 is a wasteful number, since it uses less digits than its factorization.

21030121003331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9060802033.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21030121003331 its reverse (13330012103012), we get a palindrome (34360133106343).

The spelling of 21030121003331 in words is "twenty-one trillion, thirty billion, one hundred twenty-one million, three thousand, three hundred thirty-one".