122212637 has 2 divisors, whose sum is σ = 122212638. Its totient is φ = 122212636.

The previous prime is 122212621. The next prime is 122212667. The reversal of 122212637 is 736212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112763161 + 9449476 = 10619^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 122212637 - 2⁴ = 122212621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122212667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106318 + 61106319.

It is an arithmetic number, because the mean of its divisors is an integer number (61106319).

Almost surely, 2^122212637 is an apocalyptic number.

It is an amenable number.

122212637 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212637 is an equidigital number, since it uses as much as digits as its factorization.

122212637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 122212637 is about 11054.9824513655. The cubic root of 122212637 is about 496.2555441011.

Adding to 122212637 its reverse (736212221), we get a palindrome (858424858).

The spelling of 122212637 in words is "one hundred twenty-two million, two hundred twelve thousand, six hundred thirty-seven".