22012120011 has 32 divisors (see below), whose sum is σ = 34260544000. Its totient is φ = 12565959840.

The previous prime is 22012119971. The next prime is 22012120021. The reversal of 22012120011 is 11002121022.

It is not a de Polignac number, because 22012120011 - 2¹⁰ = 22012118987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012120021) 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, 1089996 + ... + 1110006.

It is an arithmetic number, because the mean of its divisors is an integer number (1070642000).

Almost surely, 2^22012120011 is an apocalyptic number.

22012120011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

22012120011 is a deficient number, since it is larger than the sum of its proper divisors (12248423989).

22012120011 is a wasteful number, since it uses less digits than its factorization.

22012120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104 (or 21090 counting only the distinct ones).

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

Adding to 22012120011 its reverse (11002121022), we get a palindrome (33014241033).

It can be divided in two parts, 2201 and 2120011, that added together give a palindrome (2122212).

The spelling of 22012120011 in words is "twenty-two billion, twelve million, one hundred twenty thousand, eleven".