22120102012 has 12 divisors (see below), whose sum is σ = 38713734136. Its totient is φ = 11059035120.

The previous prime is 22120102009. The next prime is 22120102013. The reversal of 22120102012 is 21020102122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22120101983 and 22120102001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120102013) 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, 203883 + ... + 292930.

Almost surely, 2^22120102012 is an apocalyptic number.

It is an amenable number.

22120102012 is a deficient number, since it is larger than the sum of its proper divisors (16593632124).

22120102012 is a wasteful number, since it uses less digits than its factorization.

22120102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507948 (or 507946 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120102012 its reverse (21020102122), we get a palindrome (43140204134).

The spelling of 22120102012 in words is "twenty-two billion, one hundred twenty million, one hundred two thousand, twelve".