22012222211112 has 32 divisors (see below), whose sum is σ = 62892063460800. Its totient is φ = 6289206345984.

The previous prime is 22012222211093. The next prime is 22012222211117. The reversal of 22012222211112 is 21111222221022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22012222211117) 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, 65512565937 + ... + 65512566272.

It is an arithmetic number, because the mean of its divisors is an integer number (1965376983150).

Almost surely, 2^{22012222211112} is an apocalyptic number.

It is an amenable number.

22012222211112 is an abundant number, since it is smaller than the sum of its proper divisors (40879841249688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22012222211112 is a wasteful number, since it uses less digits than its factorization.

22012222211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131025132225 (or 131025132221 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22012222211112 its reverse (21111222221022), we get a palindrome (43123444432134).

The spelling of 22012222211112 in words is "twenty-two trillion, twelve billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twelve".