20202101222001 has 16 divisors (see below), whose sum is σ = 27871069123200. Its totient is φ = 13000803798528.

The previous prime is 20202101221999. The next prime is 20202101222003. The reversal of 20202101222001 is 10022210120202.

It is an interprime number because it is at equal distance from previous prime (20202101221999) and next prime (20202101222003).

It is not a de Polignac number, because 20202101222001 - 2¹ = 20202101221999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20202101222003) 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, 25025056 + ... + 25819713.

It is an arithmetic number, because the mean of its divisors is an integer number (1741941820200).

Almost surely, 2^{20202101222001} is an apocalyptic number.

It is an amenable number.

20202101222001 is a deficient number, since it is larger than the sum of its proper divisors (7668967901199).

20202101222001 is a wasteful number, since it uses less digits than its factorization.

20202101222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50849368.

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

Adding to 20202101222001 its reverse (10022210120202), we get a palindrome (30224311342203).

The spelling of 20202101222001 in words is "twenty trillion, two hundred two billion, one hundred one million, two hundred twenty-two thousand, one".