12210454144 has 32 divisors (see below), whose sum is σ = 27800589600. Its totient is φ = 5233051392.

The previous prime is 12210454133. The next prime is 12210454181. The reversal of 12210454144 is 44145401221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812974 + ... + 6814765.

It is an arithmetic number, because the mean of its divisors is an integer number (868768425).

Almost surely, 2^12210454144 is an apocalyptic number.

12210454144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12210454144 is an abundant number, since it is smaller than the sum of its proper divisors (15590135456).

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

12210454144 is an equidigital number, since it uses as much as digits as its factorization.

12210454144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13627760 (or 13627748 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 12210454144 its reverse (44145401221), we get a palindrome (56355855365).

The spelling of 12210454144 in words is "twelve billion, two hundred ten million, four hundred fifty-four thousand, one hundred forty-four".