12215003535437 has 2 divisors, whose sum is σ = 12215003535438. Its totient is φ = 12215003535436.

The previous prime is 12215003535433. The next prime is 12215003535463. The reversal of 12215003535437 is 73453530051221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12064097702281 + 150905833156 = 3473341^2 + 388466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12215003535437 - 2² = 12215003535433 is a prime.

It is a super-2 number, since 2×12215003535437² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12215003535394 and 12215003535403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215003535433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107501767718 + 6107501767719.

It is an arithmetic number, because the mean of its divisors is an integer number (6107501767719).

Almost surely, 2^{12215003535437} is an apocalyptic number.

It is an amenable number.

12215003535437 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215003535437 is an equidigital number, since it uses as much as digits as its factorization.

12215003535437 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 41.

Adding to 12215003535437 its reverse (73453530051221), we get a palindrome (85668533586658).

The spelling of 12215003535437 in words is "twelve trillion, two hundred fifteen billion, three million, five hundred thirty-five thousand, four hundred thirty-seven".