21100110200231 has 2 divisors, whose sum is σ = 21100110200232. Its totient is φ = 21100110200230.

The previous prime is 21100110200209. The next prime is 21100110200243. The reversal of 21100110200231 is 13200201100112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21100110200231 - 2²⁶ = 21100043091367 is a prime.

It is a super-2 number, since 2×21100110200231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100110400231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550055100115 + 10550055100116.

It is an arithmetic number, because the mean of its divisors is an integer number (10550055100116).

Almost surely, 2^{21100110200231} is an apocalyptic number.

21100110200231 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100110200231 is an equidigital number, since it uses as much as digits as its factorization.

21100110200231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21100110200231 its reverse (13200201100112), we get a palindrome (34300311300343).

The spelling of 21100110200231 in words is "twenty-one trillion, one hundred billion, one hundred ten million, two hundred thousand, two hundred thirty-one".