21122030310023 has 4 divisors (see below), whose sum is σ = 21122112216480. Its totient is φ = 21121948403568.

The previous prime is 21122030310013. The next prime is 21122030310047. The reversal of 21122030310023 is 32001303022112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21122030310023 - 2²⁶ = 21121963201159 is a prime.

It is a super-2 number, since 2×21122030310023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21122030309977 and 21122030310004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122030310013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40565183 + ... + 41082576.

It is an arithmetic number, because the mean of its divisors is an integer number (5280528054120).

Almost surely, 2^{21122030310023} is an apocalyptic number.

21122030310023 is a deficient number, since it is larger than the sum of its proper divisors (81906457).

21122030310023 is an equidigital number, since it uses as much as digits as its factorization.

21122030310023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81906456.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21122030310023 its reverse (32001303022112), we get a palindrome (53123333332135).

The spelling of 21122030310023 in words is "twenty-one trillion, one hundred twenty-two billion, thirty million, three hundred ten thousand, twenty-three".