12215110154 has 16 divisors (see below), whose sum is σ = 19783636992. Its totient is φ = 5623018608.

The previous prime is 12215110151. The next prime is 12215110247. The reversal of 12215110154 is 45101151221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12215110151) 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, 603374 + ... + 623289.

It is an arithmetic number, because the mean of its divisors is an integer number (1236477312).

Almost surely, 2^12215110154 is an apocalyptic number.

12215110154 is a deficient number, since it is larger than the sum of its proper divisors (7568526838).

12215110154 is a wasteful number, since it uses less digits than its factorization.

12215110154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227061.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 12215110154 its reverse (45101151221), we get a palindrome (57316261375).

The spelling of 12215110154 in words is "twelve billion, two hundred fifteen million, one hundred ten thousand, one hundred fifty-four".