202012021221201 has 6 divisors (see below), whose sum is σ = 291795141763970. Its totient is φ = 134674680814128.

The previous prime is 202012021221133. The next prime is 202012021221209. The reversal of 202012021221201 is 102122120210202.

It is a happy number.

202012021221201 is a `hidden beast` number, since 2 + 0 + 201 + 20 + 21 + 221 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 177161397419601 + 24850623801600 = 13310199^2 + 4985040^2 .

It is not a de Polignac number, because 202012021221201 - 2¹¹ = 202012021219153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202012021221209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11222890067836 + ... + 11222890067853.

Almost surely, 2^{202012021221201} is an apocalyptic number.

It is an amenable number.

202012021221201 is a deficient number, since it is larger than the sum of its proper divisors (89783120542769).

202012021221201 is a wasteful number, since it uses less digits than its factorization.

202012021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22445780135695 (or 22445780135692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202012021221201 its reverse (102122120210202), we get a palindrome (304134141431403).

The spelling of 202012021221201 in words is "two hundred two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred one".