20212203312231 has 32 divisors (see below), whose sum is σ = 31876022051328. Its totient is φ = 11151960975360.

The previous prime is 20212203312193. The next prime is 20212203312233. The reversal of 20212203312231 is 13221330221202.

It is not a de Polignac number, because 20212203312231 - 2¹³ = 20212203304039 is a prime.

It is a super-2 number, since 2×20212203312231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212203312233) 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 31 ways as a sum of consecutive naturals, for example, 120923005 + ... + 121090038.

It is an arithmetic number, because the mean of its divisors is an integer number (996125689104).

Almost surely, 2^{20212203312231} is an apocalyptic number.

20212203312231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20212203312231 is a deficient number, since it is larger than the sum of its proper divisors (11663818739097).

20212203312231 is a wasteful number, since it uses less digits than its factorization.

20212203312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242013191.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20212203312231 its reverse (13221330221202), we get a palindrome (33433533533433).

The spelling of 20212203312231 in words is "twenty trillion, two hundred twelve billion, two hundred three million, three hundred twelve thousand, two hundred thirty-one".