21020002202201 has 8 divisors (see below), whose sum is σ = 22127290336800. Its totient is φ = 19912811290560.

The previous prime is 21020002202191. The next prime is 21020002202203. The reversal of 21020002202201 is 10220220002012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21020002202201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020002202203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23861735 + ... + 24726956.

It is an arithmetic number, because the mean of its divisors is an integer number (2765911292100).

Almost surely, 2^{21020002202201} is an apocalyptic number.

It is an amenable number.

21020002202201 is a deficient number, since it is larger than the sum of its proper divisors (1107288134599).

21020002202201 is a wasteful number, since it uses less digits than its factorization.

21020002202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48611479.

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

Adding to 21020002202201 its reverse (10220220002012), we get a palindrome (31240222204213).

The spelling of 21020002202201 in words is "twenty-one trillion, twenty billion, two million, two hundred two thousand, two hundred one".