12215003535451 has 4 divisors (see below), whose sum is σ = 12746090645712. Its totient is φ = 11683916425192.

The previous prime is 12215003535437. The next prime is 12215003535463. The reversal of 12215003535451 is 15453530051221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12215003535451 - 2²⁷ = 12214869317723 is a prime.

It is a super-2 number, since 2×12215003535451² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12215003535451.

It is not an unprimeable number, because it can be changed into a prime (12215003535151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265543555096 + ... + 265543555141.

It is an arithmetic number, because the mean of its divisors is an integer number (3186522661428).

Almost surely, 2^{12215003535451} is an apocalyptic number.

12215003535451 is a deficient number, since it is larger than the sum of its proper divisors (531087110261).

12215003535451 is an equidigital number, since it uses as much as digits as its factorization.

12215003535451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531087110260.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 12215003535451 its reverse (15453530051221), we get a palindrome (27668533586672).

The spelling of 12215003535451 in words is "twelve trillion, two hundred fifteen billion, three million, five hundred thirty-five thousand, four hundred fifty-one".