202120402201 has 16 divisors (see below), whose sum is σ = 209720514960. Its totient is φ = 194634316800.

The previous prime is 202120402199. The next prime is 202120402223. The reversal of 202120402201 is 102204021202.

It can be written as a sum of positive squares in 8 ways, for example, as 106110601 + 202014291600 = 10301^2 + 449460^2 .

It is a cyclic number.

It is not a de Polignac number, because 202120402201 - 2¹ = 202120402199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202120402261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11086045 + ... + 11104261.

It is an arithmetic number, because the mean of its divisors is an integer number (13107532185).

Almost surely, 2^202120402201 is an apocalyptic number.

It is an amenable number.

202120402201 is a deficient number, since it is larger than the sum of its proper divisors (7600112759).

202120402201 is a wasteful number, since it uses less digits than its factorization.

202120402201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21324.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202120402201 its reverse (102204021202), we get a palindrome (304324423403).

The spelling of 202120402201 in words is "two hundred two billion, one hundred twenty million, four hundred two thousand, two hundred one".