12220212053437 has 2 divisors, whose sum is σ = 12220212053438. Its totient is φ = 12220212053436.

The previous prime is 12220212053419. The next prime is 12220212053447. The reversal of 12220212053437 is 73435021202221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11159200810521 + 1061011242916 = 3340539^2 + 1030054^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220212053437 - 2¹⁵ = 12220212020669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220212053447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110106026718 + 6110106026719.

It is an arithmetic number, because the mean of its divisors is an integer number (6110106026719).

Almost surely, 2^{12220212053437} is an apocalyptic number.

It is an amenable number.

12220212053437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220212053437 is an equidigital number, since it uses as much as digits as its factorization.

12220212053437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 12220212053437 its reverse (73435021202221), we get a palindrome (85655233255658).

The spelling of 12220212053437 in words is "twelve trillion, two hundred twenty billion, two hundred twelve million, fifty-three thousand, four hundred thirty-seven".