12220025611 has 4 divisors (see below), whose sum is σ = 12268711224. Its totient is φ = 12171340000.

The previous prime is 12220025599. The next prime is 12220025633. The reversal of 12220025611 is 11652002221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12220025611 - 2¹⁵ = 12219992843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220025711) 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, 24342430 + ... + 24342931.

It is an arithmetic number, because the mean of its divisors is an integer number (3067177806).

Almost surely, 2^12220025611 is an apocalyptic number.

12220025611 is a deficient number, since it is larger than the sum of its proper divisors (48685613).

12220025611 is an equidigital number, since it uses as much as digits as its factorization.

12220025611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48685612.

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

Adding to 12220025611 its reverse (11652002221), we get a palindrome (23872027832).

The spelling of 12220025611 in words is "twelve billion, two hundred twenty million, twenty-five thousand, six hundred eleven".