122232211021 has 2 divisors, whose sum is σ = 122232211022. Its totient is φ = 122232211020.

The previous prime is 122232210973. The next prime is 122232211033. The reversal of 122232211021 is 120112232221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82246209796 + 39986001225 = 286786^2 + 199965^2 .

It is an emirp because it is prime and its reverse (120112232221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122232211021 - 2²⁷ = 122097993293 is a prime.

It is a super-2 number, since 2×122232211021² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122232211021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122232211421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61116105510 + 61116105511.

It is an arithmetic number, because the mean of its divisors is an integer number (61116105511).

Almost surely, 2^122232211021 is an apocalyptic number.

It is an amenable number.

122232211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122232211021 is an equidigital number, since it uses as much as digits as its factorization.

122232211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 122232211021 its reverse (120112232221), we get a palindrome (242344443242).

The spelling of 122232211021 in words is "one hundred twenty-two billion, two hundred thirty-two million, two hundred eleven thousand, twenty-one".