12020022111 has 24 divisors (see below), whose sum is σ = 17162527536. Its totient is φ = 7477951360.

The previous prime is 12020022107. The next prime is 12020022137. The reversal of 12020022111 is 11122002021.

It is not a de Polignac number, because 12020022111 - 2² = 12020022107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020022211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27300 + ... + 157433.

It is an arithmetic number, because the mean of its divisors is an integer number (715105314).

Almost surely, 2^12020022111 is an apocalyptic number.

12020022111 is a deficient number, since it is larger than the sum of its proper divisors (5142505425).

12020022111 is a wasteful number, since it uses less digits than its factorization.

12020022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184823 (or 184800 counting only the distinct ones).

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

Adding to 12020022111 its reverse (11122002021), we get a palindrome (23142024132).

It can be divided in two parts, 120200 and 22111, that added together give a triangular number (142311 = T₅₃₃).

The spelling of 12020022111 in words is "twelve billion, twenty million, twenty-two thousand, one hundred eleven".