22021002112 has 16 divisors (see below), whose sum is σ = 43869965400. Its totient is φ = 11010500992.

The previous prime is 22021002083. The next prime is 22021002119. The reversal of 22021002112 is 21120012022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 22021002092 and 22021002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021002119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86019412 + ... + 86019667.

Almost surely, 2^22021002112 is an apocalyptic number.

It is an amenable number.

22021002112 is a deficient number, since it is larger than the sum of its proper divisors (21848963288).

22021002112 is an equidigital number, since it uses as much as digits as its factorization.

22021002112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172039093 (or 172039081 counting only the distinct ones).

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

Adding to 22021002112 its reverse (21120012022), we get a palindrome (43141014134).

The spelling of 22021002112 in words is "twenty-two billion, twenty-one million, two thousand, one hundred twelve".