122302421 has 2 divisors, whose sum is σ = 122302422. Its totient is φ = 122302420.

The previous prime is 122302417. The next prime is 122302423. The reversal of 122302421 is 124203221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121330225 + 972196 = 11015^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 122302421 - 2² = 122302417 is a prime.

It is a super-2 number, since 2×122302421² = 29915764364922482, which contains 22 as substring.

Together with 122302423, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122302421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122302423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61151210 + 61151211.

It is an arithmetic number, because the mean of its divisors is an integer number (61151211).

Almost surely, 2^122302421 is an apocalyptic number.

It is an amenable number.

122302421 is a deficient number, since it is larger than the sum of its proper divisors (1).

122302421 is an equidigital number, since it uses as much as digits as its factorization.

122302421 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 17.

The square root of 122302421 is about 11059.0424992402. The cubic root of 122302421 is about 496.3770397235.

Adding to 122302421 its reverse (124203221), we get a palindrome (246505642).

The spelling of 122302421 in words is "one hundred twenty-two million, three hundred two thousand, four hundred twenty-one".