202121000022001 has 8 divisors (see below), whose sum is σ = 212807050339520. Its totient is φ = 191439759999312.

The previous prime is 202121000021989. The next prime is 202121000022059. The reversal of 202121000022001 is 100220000121202.

It is a happy number.

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-202121000022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121000023001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202487450 + ... + 1202655523.

It is an arithmetic number, because the mean of its divisors is an integer number (26600881292440).

Almost surely, 2^{202121000022001} is an apocalyptic number.

It is an amenable number.

202121000022001 is a deficient number, since it is larger than the sum of its proper divisors (10686050317519).

202121000022001 is a wasteful number, since it uses less digits than its factorization.

202121000022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405147415.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202121000022001 its reverse (100220000121202), we get a palindrome (302341000143203).

The spelling of 202121000022001 in words is "two hundred two trillion, one hundred twenty-one billion, twenty-two thousand, one".