20210202111021 has 32 divisors (see below), whose sum is σ = 29038861727232. Its totient is φ = 12428870446080.

The previous prime is 20210202110999. The next prime is 20210202111023. The reversal of 20210202111021 is 12011120201202.

It is not a de Polignac number, because 20210202111021 - 2⁷ = 20210202110893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210202111023) 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 31 ways as a sum of consecutive naturals, for example, 648724581 + ... + 648755733.

It is an arithmetic number, because the mean of its divisors is an integer number (907464428976).

Almost surely, 2^{20210202111021} is an apocalyptic number.

It is an amenable number.

20210202111021 is a deficient number, since it is larger than the sum of its proper divisors (8828659616211).

20210202111021 is a wasteful number, since it uses less digits than its factorization.

20210202111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41573.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20210202111021 its reverse (12011120201202), we get a palindrome (32221322312223).

The spelling of 20210202111021 in words is "twenty trillion, two hundred ten billion, two hundred two million, one hundred eleven thousand, twenty-one".