2021101120057 has 2 divisors, whose sum is σ = 2021101120058. Its totient is φ = 2021101120056.

The previous prime is 2021101119977. The next prime is 2021101120091. The reversal of 2021101120057 is 7500211011202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2021014797376 + 86322681 = 1421624^2 + 9291^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021101120057 - 2⁷ = 2021101119929 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111120057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010550560028 + 1010550560029.

It is an arithmetic number, because the mean of its divisors is an integer number (1010550560029).

Almost surely, 2^{2021101120057} is an apocalyptic number.

It is an amenable number.

2021101120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021101120057 is an equidigital number, since it uses as much as digits as its factorization.

2021101120057 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 2021101120057 its reverse (7500211011202), we get a palindrome (9521312131259).

The spelling of 2021101120057 in words is "two trillion, twenty-one billion, one hundred one million, one hundred twenty thousand, fifty-seven".