12220020111 has 32 divisors (see below), whose sum is σ = 18089523648. Its totient is φ = 7289717760.

The previous prime is 12220020103. The next prime is 12220020161. The reversal of 12220020111 is 11102002221.

It is not a de Polignac number, because 12220020111 - 2³ = 12220020103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220020161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226705 + ... + 275381.

It is an arithmetic number, because the mean of its divisors is an integer number (565297614).

Almost surely, 2^12220020111 is an apocalyptic number.

12220020111 is a deficient number, since it is larger than the sum of its proper divisors (5869503537).

12220020111 is a wasteful number, since it uses less digits than its factorization.

12220020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48891.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12220020111 its reverse (11102002221), we get a palindrome (23322022332).

It can be divided in two parts, 122200 and 20111, that added together give a triangular number (142311 = T₅₃₃).

The spelling of 12220020111 in words is "twelve billion, two hundred twenty million, twenty thousand, one hundred eleven".