20211012200231 has 2 divisors, whose sum is σ = 20211012200232. Its totient is φ = 20211012200230.

The previous prime is 20211012200213. The next prime is 20211012200273. The reversal of 20211012200231 is 13200221011202.

Together with previous prime (20211012200213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20211012200231 - 2⁶ = 20211012200167 is a prime.

It is a super-2 number, since 2×20211012200231² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211012209231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105506100115 + 10105506100116.

It is an arithmetic number, because the mean of its divisors is an integer number (10105506100116).

Almost surely, 2^{20211012200231} is an apocalyptic number.

20211012200231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211012200231 is an equidigital number, since it uses as much as digits as its factorization.

20211012200231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20211012200231 its reverse (13200221011202), we get a palindrome (33411233211433).

The spelling of 20211012200231 in words is "twenty trillion, two hundred eleven billion, twelve million, two hundred thousand, two hundred thirty-one".