221122102057 has 2 divisors, whose sum is σ = 221122102058. Its totient is φ = 221122102056.

The previous prime is 221122102039. The next prime is 221122102063. The reversal of 221122102057 is 750201221122.

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., 195413507136 + 25708594921 = 442056^2 + 160339^2 .

It is a cyclic number.

It is not a de Polignac number, because 221122102057 - 2¹¹ = 221122100009 is a prime.

It is not a weakly prime, because it can be changed into another prime (221122102757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561051028 + 110561051029.

It is an arithmetic number, because the mean of its divisors is an integer number (110561051029).

Almost surely, 2^221122102057 is an apocalyptic number.

It is an amenable number.

221122102057 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122102057 is an equidigital number, since it uses as much as digits as its factorization.

221122102057 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 221122102057 its reverse (750201221122), we get a palindrome (971323323179).

The spelling of 221122102057 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, fifty-seven".