221022138053 has 2 divisors, whose sum is σ = 221022138054. Its totient is φ = 221022138052.

The previous prime is 221022138041. The next prime is 221022138091. The reversal of 221022138053 is 350831220122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175072785889 + 45949352164 = 418417^2 + 214358^2 .

It is a cyclic number.

It is not a de Polignac number, because 221022138053 - 2¹⁶ = 221022072517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221022138023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511069026 + 110511069027.

It is an arithmetic number, because the mean of its divisors is an integer number (110511069027).

Almost surely, 2^221022138053 is an apocalyptic number.

It is an amenable number.

221022138053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022138053 is an equidigital number, since it uses as much as digits as its factorization.

221022138053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 221022138053 its reverse (350831220122), we get a palindrome (571853358175).

The spelling of 221022138053 in words is "two hundred twenty-one billion, twenty-two million, one hundred thirty-eight thousand, fifty-three".