22131121112 has 32 divisors (see below), whose sum is σ = 43778577600. Its totient is φ = 10459466784.

The previous prime is 22131121097. The next prime is 22131121121. The reversal of 22131121112 is 21112113122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96998 + ... + 231669.

It is an arithmetic number, because the mean of its divisors is an integer number (1368080550).

Almost surely, 2^22131121112 is an apocalyptic number.

It is an amenable number.

22131121112 is a deficient number, since it is larger than the sum of its proper divisors (21647456488).

22131121112 is a wasteful number, since it uses less digits than its factorization.

22131121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329135 (or 329131 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

Adding to 22131121112 its reverse (21112113122), we get a palindrome (43243234234).

The spelling of 22131121112 in words is "twenty-two billion, one hundred thirty-one million, one hundred twenty-one thousand, one hundred twelve".