21202210030023 has 160 divisors (see below), whose sum is σ = 37385998239744. Its totient is φ = 11849846400000.

The previous prime is 21202210030019. The next prime is 21202210030069. The reversal of 21202210030023 is 32003001220212.

21202210030023 is a `hidden beast` number, since 2 + 120 + 221 + 0 + 0 + 300 + 23 = 666.

It is not a de Polignac number, because 21202210030023 - 2² = 21202210030019 is a prime.

It is a super-2 number, since 2×21202210030023² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202210029978 and 21202210030005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202210030013) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 48478123 + ... + 48913523.

Almost surely, 2^{21202210030023} is an apocalyptic number.

21202210030023 is a deficient number, since it is larger than the sum of its proper divisors (16183788209721).

21202210030023 is a wasteful number, since it uses less digits than its factorization.

21202210030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435539 (or 435530 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21202210030023 its reverse (32003001220212), we get a palindrome (53205211250235).

The spelling of 21202210030023 in words is "twenty-one trillion, two hundred two billion, two hundred ten million, thirty thousand, twenty-three".