12210020221057 has 2 divisors, whose sum is σ = 12210020221058. Its totient is φ = 12210020221056.

The previous prime is 12210020221043. The next prime is 12210020221097. The reversal of 12210020221057 is 75012202001221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7051143849201 + 5158876371856 = 2655399^2 + 2271316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210020221057 is a prime.

It is a super-2 number, since 2×12210020221057² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12210020221097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105010110528 + 6105010110529.

It is an arithmetic number, because the mean of its divisors is an integer number (6105010110529).

Almost surely, 2^{12210020221057} is an apocalyptic number.

It is an amenable number.

12210020221057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210020221057 is an equidigital number, since it uses as much as digits as its factorization.

12210020221057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 12210020221057 its reverse (75012202001221), we get a palindrome (87222222222278).

The spelling of 12210020221057 in words is "twelve trillion, two hundred ten billion, twenty million, two hundred twenty-one thousand, fifty-seven".