20201241202057 has 2 divisors, whose sum is σ = 20201241202058. Its totient is φ = 20201241202056.

The previous prime is 20201241202013. The next prime is 20201241202127. The reversal of 20201241202057 is 75020214210202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11977302758976 + 8223938443081 = 3460824^2 + 2867741^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201241202057 - 2²³ = 20201232813449 is a prime.

It is a super-2 number, since 2×20201241202057² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20201241200057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100620601028 + 10100620601029.

It is an arithmetic number, because the mean of its divisors is an integer number (10100620601029).

Almost surely, 2^{20201241202057} is an apocalyptic number.

It is an amenable number.

20201241202057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201241202057 is an equidigital number, since it uses as much as digits as its factorization.

20201241202057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 20201241202057 its reverse (75020214210202), we get a palindrome (95221455412259).

The spelling of 20201241202057 in words is "twenty trillion, two hundred one billion, two hundred forty-one million, two hundred two thousand, fifty-seven".