12145221013 has 8 divisors (see below), whose sum is σ = 12661134336. Its totient is φ = 11637066000.

The previous prime is 12145220993. The next prime is 12145221017. The reversal of 12145221013 is 31012254121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12145221013 - 2⁵ = 12145220981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145221017) 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, 1936381 + ... + 1942642.

It is an arithmetic number, because the mean of its divisors is an integer number (1582641792).

Almost surely, 2^12145221013 is an apocalyptic number.

It is an amenable number.

12145221013 is a deficient number, since it is larger than the sum of its proper divisors (515913323).

12145221013 is a wasteful number, since it uses less digits than its factorization.

12145221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879155.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 12145221013 its reverse (31012254121), we get a palindrome (43157475134).

The spelling of 12145221013 in words is "twelve billion, one hundred forty-five million, two hundred twenty-one thousand, thirteen".