202000201112021 has 4 divisors (see below), whose sum is σ = 217538678120652. Its totient is φ = 186461724103392.

The previous prime is 202000201111967. The next prime is 202000201112041. The reversal of 202000201112021 is 120211102000202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107466602892100 + 94533598219921 = 10366610^2 + 9722839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202000201112021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202000201111987 and 202000201112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202000201112041) 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 3 ways as a sum of consecutive naturals, for example, 7769238504296 + ... + 7769238504321.

It is an arithmetic number, because the mean of its divisors is an integer number (54384669530163).

Almost surely, 2^{202000201112021} is an apocalyptic number.

It is an amenable number.

202000201112021 is a deficient number, since it is larger than the sum of its proper divisors (15538477008631).

202000201112021 is a wasteful number, since it uses less digits than its factorization.

202000201112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15538477008630.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202000201112021 its reverse (120211102000202), we get a palindrome (322211303112223).

The spelling of 202000201112021 in words is "two hundred two trillion, two hundred one million, one hundred twelve thousand, twenty-one".