12210345155 has 16 divisors (see below), whose sum is σ = 15426508320. Its totient is φ = 9252407808.

The previous prime is 12210345151. The next prime is 12210345157. The reversal of 12210345155 is 55154301221.

It is not a de Polignac number, because 12210345155 - 2² = 12210345151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12210345151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732089 + ... + 748581.

It is an arithmetic number, because the mean of its divisors is an integer number (964156770).

Almost surely, 2^12210345155 is an apocalyptic number.

12210345155 is a deficient number, since it is larger than the sum of its proper divisors (3216163165).

12210345155 is a wasteful number, since it uses less digits than its factorization.

12210345155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24310.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 12210345155 its reverse (55154301221), we get a palindrome (67364646376).

The spelling of 12210345155 in words is "twelve billion, two hundred ten million, three hundred forty-five thousand, one hundred fifty-five".