12145421110 has 16 divisors (see below), whose sum is σ = 23012377200. Its totient is φ = 4602475296.

The previous prime is 12145421077. The next prime is 12145421153. The reversal of 12145421110 is 1112454121.

It is a happy number.

It is a super-2 number, since 2×12145421110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31961445 + ... + 31961824.

It is an arithmetic number, because the mean of its divisors is an integer number (1438273575).

Almost surely, 2^12145421110 is an apocalyptic number.

12145421110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12145421110 is a deficient number, since it is larger than the sum of its proper divisors (10866956090).

12145421110 is a wasteful number, since it uses less digits than its factorization.

12145421110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63923295.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 12145421110 its reverse (1112454121), we get a palindrome (13257875231).

The spelling of 12145421110 in words is "twelve billion, one hundred forty-five million, four hundred twenty-one thousand, one hundred ten".