12215110134 has 16 divisors (see below), whose sum is σ = 24431306688. Its totient is φ = 4071522312.

The previous prime is 12215110133. The next prime is 12215110151. The reversal of 12215110134 is 43101151221.

It is a self number, because there is not a number n which added to its sum of digits gives 12215110134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215110133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225309 + ... + 274215.

It is an arithmetic number, because the mean of its divisors is an integer number (1526956668).

Almost surely, 2^12215110134 is an apocalyptic number.

12215110134 is an abundant number, since it is smaller than the sum of its proper divisors (12216196554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215110134 is a wasteful number, since it uses less digits than its factorization.

12215110134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90539.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 12215110134 its reverse (43101151221), we get a palindrome (55316261355).

The spelling of 12215110134 in words is "twelve billion, two hundred fifteen million, one hundred ten thousand, one hundred thirty-four".