21110122222031 has 2 divisors, whose sum is σ = 21110122222032. Its totient is φ = 21110122222030.

The previous prime is 21110122221989. The next prime is 21110122222069. The reversal of 21110122222031 is 13022222101112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21110122222031 - 2²⁶ = 21110055113167 is a prime.

It is a super-3 number, since 3×21110122222031³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21110122221994 and 21110122222012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110122222831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555061111015 + 10555061111016.

It is an arithmetic number, because the mean of its divisors is an integer number (10555061111016).

Almost surely, 2^{21110122222031} is an apocalyptic number.

21110122222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110122222031 is an equidigital number, since it uses as much as digits as its factorization.

21110122222031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21110122222031 its reverse (13022222101112), we get a palindrome (34132344323143).

The spelling of 21110122222031 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, two hundred twenty-two thousand, thirty-one".