202201220000021 has 16 divisors (see below), whose sum is σ = 224202904345728. Its totient is φ = 180802925995200.

The previous prime is 202201219999997. The next prime is 202201220000041. The reversal of 202201220000021 is 120000022102202.

It is a cyclic number.

It is not a de Polignac number, because 202201220000021 - 2⁶ = 202201219999957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202201219999960 and 202201220000005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202201220000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39472115 + ... + 44299551.

It is an arithmetic number, because the mean of its divisors is an integer number (14012681521608).

Almost surely, 2^{202201220000021} is an apocalyptic number.

It is an amenable number.

202201220000021 is a deficient number, since it is larger than the sum of its proper divisors (22001684345707).

202201220000021 is a wasteful number, since it uses less digits than its factorization.

202201220000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4889932.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202201220000021 its reverse (120000022102202), we get a palindrome (322201242102223).

The spelling of 202201220000021 in words is "two hundred two trillion, two hundred one billion, two hundred twenty million, twenty-one", and thus it is an aban number.