122111321 has 2 divisors, whose sum is σ = 122111322. Its totient is φ = 122111320.

The previous prime is 122111299. The next prime is 122111329. The reversal of 122111321 is 123111221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 29855296 = 9605^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 122111321 - 2²⁶ = 55002457 is a prime.

It is a super-2 number, since 2×122111321² = 29822349432730082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122111296 and 122111305.

It is not a weakly prime, because it can be changed into another prime (122111329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055660 + 61055661.

It is an arithmetic number, because the mean of its divisors is an integer number (61055661).

Almost surely, 2^122111321 is an apocalyptic number.

It is an amenable number.

122111321 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111321 is an equidigital number, since it uses as much as digits as its factorization.

122111321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24, while the sum is 14.

The square root of 122111321 is about 11050.3991330630. The cubic root of 122111321 is about 496.1183719062.

Adding to 122111321 its reverse (123111221), we get a palindrome (245222542).

The spelling of 122111321 in words is "one hundred twenty-two million, one hundred eleven thousand, three hundred twenty-one".