2101222332457 has 2 divisors, whose sum is σ = 2101222332458. Its totient is φ = 2101222332456.

The previous prime is 2101222332403. The next prime is 2101222332479. The reversal of 2101222332457 is 7542332221012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755794604096 + 345427728361 = 1325064^2 + 587731^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101222332457 - 2¹¹ = 2101222330409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101222312457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050611166228 + 1050611166229.

It is an arithmetic number, because the mean of its divisors is an integer number (1050611166229).

Almost surely, 2^{2101222332457} is an apocalyptic number.

It is an amenable number.

2101222332457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101222332457 is an equidigital number, since it uses as much as digits as its factorization.

2101222332457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 2101222332457 its reverse (7542332221012), we get a palindrome (9643554553469).

The spelling of 2101222332457 in words is "two trillion, one hundred one billion, two hundred twenty-two million, three hundred thirty-two thousand, four hundred fifty-seven".