202121222001001 has 8 divisors (see below), whose sum is σ = 206821952183264. Its totient is φ = 197420502575520.

The previous prime is 202121222000963. The next prime is 202121222001043. The reversal of 202121222001001 is 100100222121202.

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 not a de Polignac number, because 202121222001001 - 2³⁵ = 202086862262633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121222001071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45083005 + ... + 49363141.

It is an arithmetic number, because the mean of its divisors is an integer number (25852744022908).

Almost surely, 2^{202121222001001} is an apocalyptic number.

It is an amenable number.

202121222001001 is a deficient number, since it is larger than the sum of its proper divisors (4700730182263).

202121222001001 is a wasteful number, since it uses less digits than its factorization.

202121222001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378391.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202121222001001 its reverse (100100222121202), we get a palindrome (302221444122203).

The spelling of 202121222001001 in words is "two hundred two trillion, one hundred twenty-one billion, two hundred twenty-two million, one thousand, one".