1223502355237 has 2 divisors, whose sum is σ = 1223502355238. Its totient is φ = 1223502355236.

The previous prime is 1223502355189. The next prime is 1223502355253. The reversal of 1223502355237 is 7325532053221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1082944097316 + 140558257921 = 1040646^2 + 374911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223502355237 - 2³⁵ = 1189142616869 is a prime.

It is a super-2 number, since 2×1223502355237² (a number of 25 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 1223502355237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223502355337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611751177618 + 611751177619.

It is an arithmetic number, because the mean of its divisors is an integer number (611751177619).

Almost surely, 2^{1223502355237} is an apocalyptic number.

It is an amenable number.

1223502355237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223502355237 is an equidigital number, since it uses as much as digits as its factorization.

1223502355237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 40.

The spelling of 1223502355237 in words is "one trillion, two hundred twenty-three billion, five hundred two million, three hundred fifty-five thousand, two hundred thirty-seven".