20013222210021 has 8 divisors (see below), whose sum is σ = 29649218088960. Its totient is φ = 13342148139996.

The previous prime is 20013222210019. The next prime is 20013222210119. The reversal of 20013222210021 is 12001222231002.

20013222210021 is a `hidden beast` number, since 200 + 1 + 322 + 22 + 100 + 21 = 666.

It is not a de Polignac number, because 20013222210021 - 2¹ = 20013222210019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20013222209976 and 20013222210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013222210521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370615226085 + ... + 370615226138.

It is an arithmetic number, because the mean of its divisors is an integer number (3706152261120).

Almost surely, 2^{20013222210021} is an apocalyptic number.

It is an amenable number.

20013222210021 is a deficient number, since it is larger than the sum of its proper divisors (9635995878939).

20013222210021 is an equidigital number, since it uses as much as digits as its factorization.

20013222210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741230452232 (or 741230452226 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20013222210021 its reverse (12001222231002), we get a palindrome (32014444441023).

The spelling of 20013222210021 in words is "twenty trillion, thirteen billion, two hundred twenty-two million, two hundred ten thousand, twenty-one".