122221111357 has 2 divisors, whose sum is σ = 122221111358. Its totient is φ = 122221111356.

The previous prime is 122221111343. The next prime is 122221111391. The reversal of 122221111357 is 753111122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122205477241 + 15634116 = 349579^2 + 3954^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221111357 - 2²⁷ = 122086893629 is a prime.

It is a super-2 number, since 2×122221111357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221111757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110555678 + 61110555679.

It is an arithmetic number, because the mean of its divisors is an integer number (61110555679).

Almost surely, 2^122221111357 is an apocalyptic number.

It is an amenable number.

122221111357 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221111357 is an equidigital number, since it uses as much as digits as its factorization.

122221111357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

Adding to 122221111357 its reverse (753111122221), we get a palindrome (875332233578).

The spelling of 122221111357 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, three hundred fifty-seven".