202011220001021 has 4 divisors (see below), whose sum is σ = 202011248629344. Its totient is φ = 202011191372700.

The previous prime is 202011220001011. The next prime is 202011220001053. The reversal of 202011220001021 is 120100022110202.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202011220001021 is a prime.

It is a super-3 number, since 3×202011220001021³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202011220000987 and 202011220001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011220001011) 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, 4609736 + ... + 20622126.

It is an arithmetic number, because the mean of its divisors is an integer number (50502812157336).

Almost surely, 2^{202011220001021} is an apocalyptic number.

It is an amenable number.

202011220001021 is a deficient number, since it is larger than the sum of its proper divisors (28628323).

202011220001021 is a wasteful number, since it uses less digits than its factorization.

202011220001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28628322.

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

Adding to 202011220001021 its reverse (120100022110202), we get a palindrome (322111242111223).

The spelling of 202011220001021 in words is "two hundred two trillion, eleven billion, two hundred twenty million, one thousand, twenty-one".