22123201012 has 18 divisors (see below), whose sum is σ = 42555166514. Its totient is φ = 10056000240.

The previous prime is 22123200811. The next prime is 22123201043. The reversal of 22123201012 is 21010232122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18833719696 + 3289481316 = 137236^2 + 57354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22854063 + ... + 22855030.

Almost surely, 2^22123201012 is an apocalyptic number.

22123201012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22123201012 is a deficient number, since it is larger than the sum of its proper divisors (20431965502).

22123201012 is a wasteful number, since it uses less digits than its factorization.

22123201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45709119 (or 45709106 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22123201012 its reverse (21010232122), we get a palindrome (43133433134).

The spelling of 22123201012 in words is "twenty-two billion, one hundred twenty-three million, two hundred one thousand, twelve".