20210022200121 has 64 divisors (see below), whose sum is σ = 29716322549760. Its totient is φ = 12139747038720.

The previous prime is 20210022200119. The next prime is 20210022200141. The reversal of 20210022200121 is 12100222001202.

It is not a de Polignac number, because 20210022200121 - 2¹ = 20210022200119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20210022200121.

It is not an unprimeable number, because it can be changed into a prime (20210022200141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3977565301 + ... + 3977570381.

It is an arithmetic number, because the mean of its divisors is an integer number (464317539840).

Almost surely, 2^{20210022200121} is an apocalyptic number.

It is an amenable number.

20210022200121 is a deficient number, since it is larger than the sum of its proper divisors (9506300349639).

20210022200121 is a wasteful number, since it uses less digits than its factorization.

20210022200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20210022200121 its reverse (12100222001202), we get a palindrome (32310244201323).

The spelling of 20210022200121 in words is "twenty trillion, two hundred ten billion, twenty-two million, two hundred thousand, one hundred twenty-one".