202010210221021 has 32 divisors (see below), whose sum is σ = 215181019722240. Its totient is φ = 188984407987200.

The previous prime is 202010210221003. The next prime is 202010210221067. The reversal of 202010210221021 is 120122012010202.

It is a happy number.

It is not a de Polignac number, because 202010210221021 - 2⁵ = 202010210220989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202010210220986 and 202010210221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202010210231021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18651108076 + ... + 18651118906.

It is an arithmetic number, because the mean of its divisors is an integer number (6724406866320).

Almost surely, 2^{202010210221021} is an apocalyptic number.

It is an amenable number.

202010210221021 is a deficient number, since it is larger than the sum of its proper divisors (13170809501219).

202010210221021 is a wasteful number, since it uses less digits than its factorization.

202010210221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15765.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202010210221021 its reverse (120122012010202), we get a palindrome (322132222231223).

The spelling of 202010210221021 in words is "two hundred two trillion, ten billion, two hundred ten million, two hundred twenty-one thousand, twenty-one".