12155022154 has 16 divisors (see below), whose sum is σ = 20086970976. Its totient is φ = 5470306000.

The previous prime is 12155022149. The next prime is 12155022157. The reversal of 12155022154 is 45122055121.

It is not an unprimeable number, because it can be changed into a prime (12155022157) 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, 2732932 + ... + 2737375.

It is an arithmetic number, because the mean of its divisors is an integer number (1255435686).

Almost surely, 2^12155022154 is an apocalyptic number.

12155022154 is a deficient number, since it is larger than the sum of its proper divisors (7931948822).

12155022154 is a wasteful number, since it uses less digits than its factorization.

12155022154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470421.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 12155022154 its reverse (45122055121), we get a palindrome (57277077275).

The spelling of 12155022154 in words is "twelve billion, one hundred fifty-five million, twenty-two thousand, one hundred fifty-four".