21002012331301 has 8 divisors (see below), whose sum is σ = 21726917455320. Its totient is φ = 20277153727488.

The previous prime is 21002012331271. The next prime is 21002012331317. The reversal of 21002012331301 is 10313321020012.

It can be written as a sum of positive squares in 4 ways, for example, as 911402446276 + 20090609885025 = 954674^2 + 4482255^2 .

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 21002012331301 - 2²⁵ = 21001978776869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002012331331) 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, 10710316 + ... + 12518581.

It is an arithmetic number, because the mean of its divisors is an integer number (2715864681915).

Almost surely, 2^{21002012331301} is an apocalyptic number.

It is an amenable number.

21002012331301 is a deficient number, since it is larger than the sum of its proper divisors (724905124019).

21002012331301 is a wasteful number, since it uses less digits than its factorization.

21002012331301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23260103.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21002012331301 its reverse (10313321020012), we get a palindrome (31315333351313).

The spelling of 21002012331301 in words is "twenty-one trillion, two billion, twelve million, three hundred thirty-one thousand, three hundred one".