20101121300231 has 6 divisors (see below), whose sum is σ = 20487543713280. Its totient is φ = 19721854857848.

The previous prime is 20101121300213. The next prime is 20101121300237. The reversal of 20101121300231 is 13200312110102.

It is not a de Polignac number, because 20101121300231 - 2¹⁸ = 20101121038087 is a prime.

It is a super-2 number, since 2×20101121300231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101121300237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3577982471 + ... + 3577988088.

It is an arithmetic number, because the mean of its divisors is an integer number (3414590618880).

Almost surely, 2^{20101121300231} is an apocalyptic number.

20101121300231 is a deficient number, since it is larger than the sum of its proper divisors (386422413049).

20101121300231 is an frugal number, since it uses more digits than its factorization.

20101121300231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155970665 (or 7155970612 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20101121300231 its reverse (13200312110102), we get a palindrome (33301433410333).

The spelling of 20101121300231 in words is "twenty trillion, one hundred one billion, one hundred twenty-one million, three hundred thousand, two hundred thirty-one".