202221000022001 has 4 divisors (see below), whose sum is σ = 202239547313472. Its totient is φ = 202202452730532.

The previous prime is 202221000021941. The next prime is 202221000022121. The reversal of 202221000022001 is 100220000122202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202221000022001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202221000027001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9273629381 + ... + 9273651186.

It is an arithmetic number, because the mean of its divisors is an integer number (50559886828368).

Almost surely, 2^{202221000022001} is an apocalyptic number.

It is an amenable number.

202221000022001 is a deficient number, since it is larger than the sum of its proper divisors (18547291471).

202221000022001 is a wasteful number, since it uses less digits than its factorization.

202221000022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18547291470.

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

Adding to 202221000022001 its reverse (100220000122202), we get a palindrome (302441000144203).

The spelling of 202221000022001 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-two thousand, one".