12220420412 has 12 divisors (see below), whose sum is σ = 21548986536. Its totient is φ = 6063567120.

The previous prime is 12220420411. The next prime is 12220420439. The reversal of 12220420412 is 21402402221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220420411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11660183 + ... + 11661230.

It is an arithmetic number, because the mean of its divisors is an integer number (1795748878).

Almost surely, 2^12220420412 is an apocalyptic number.

It is an amenable number.

12220420412 is a deficient number, since it is larger than the sum of its proper divisors (9328566124).

12220420412 is a wasteful number, since it uses less digits than its factorization.

12220420412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321548 (or 23321546 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12220420412 its reverse (21402402221), we get a palindrome (33622822633).

The spelling of 12220420412 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, four hundred twelve".