2021001201157 has 2 divisors, whose sum is σ = 2021001201158. Its totient is φ = 2021001201156.

The previous prime is 2021001201041. The next prime is 2021001201161. The reversal of 2021001201157 is 7511021001202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046449207521 + 974551993636 = 1022961^2 + 987194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021001201157 - 2³¹ = 2018853717509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021001201257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010500600578 + 1010500600579.

It is an arithmetic number, because the mean of its divisors is an integer number (1010500600579).

Almost surely, 2^{2021001201157} is an apocalyptic number.

It is an amenable number.

2021001201157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021001201157 is an equidigital number, since it uses as much as digits as its factorization.

2021001201157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 2021001201157 its reverse (7511021001202), we get a palindrome (9532022202359).

The spelling of 2021001201157 in words is "two trillion, twenty-one billion, one million, two hundred one thousand, one hundred fifty-seven".