21202333012021 has 32 divisors (see below), whose sum is σ = 25168631040000. Its totient is φ = 17475615148992.

The previous prime is 21202333011941. The next prime is 21202333012033. The reversal of 21202333012021 is 12021033320212.

It is not a de Polignac number, because 21202333012021 - 2¹⁹ = 21202332487733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202333011983 and 21202333012001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202334012021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50741070 + ... + 51157216.

It is an arithmetic number, because the mean of its divisors is an integer number (786519720000).

Almost surely, 2^{21202333012021} is an apocalyptic number.

It is an amenable number.

21202333012021 is a deficient number, since it is larger than the sum of its proper divisors (3966298027979).

21202333012021 is a wasteful number, since it uses less digits than its factorization.

21202333012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417201.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21202333012021 its reverse (12021033320212), we get a palindrome (33223366332233).

The spelling of 21202333012021 in words is "twenty-one trillion, two hundred two billion, three hundred thirty-three million, twelve thousand, twenty-one".