202120334057 has 2 divisors, whose sum is σ = 202120334058. Its totient is φ = 202120334056.

The previous prime is 202120334029. The next prime is 202120334083. The reversal of 202120334057 is 750433021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156103219801 + 46017114256 = 395099^2 + 214516^2 .

It is a cyclic number.

It is not a de Polignac number, because 202120334057 - 2²⁸ = 201851898601 is a prime.

It is not a weakly prime, because it can be changed into another prime (202120334357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060167028 + 101060167029.

It is an arithmetic number, because the mean of its divisors is an integer number (101060167029).

Almost surely, 2^202120334057 is an apocalyptic number.

It is an amenable number.

202120334057 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120334057 is an equidigital number, since it uses as much as digits as its factorization.

202120334057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 202120334057 its reverse (750433021202), we get a palindrome (952553355259).

The spelling of 202120334057 in words is "two hundred two billion, one hundred twenty million, three hundred thirty-four thousand, fifty-seven".