22121201112 has 32 divisors (see below), whose sum is σ = 55328125680. Its totient is φ = 7370384000.

The previous prime is 22121201107. The next prime is 22121201191. The reversal of 22121201112 is 21110212122.

It is a junction number, because it is equal to n+sod(n) for n = 22121201091 and 22121201100.

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, 155139 + ... + 261362.

Almost surely, 2^22121201112 is an apocalyptic number.

It is an amenable number.

22121201112 is an abundant number, since it is smaller than the sum of its proper divisors (33206924568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121201112 is a wasteful number, since it uses less digits than its factorization.

22121201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418723 (or 418719 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121201112 its reverse (21110212122), we get a palindrome (43231413234).

The spelling of 22121201112 in words is "twenty-two billion, one hundred twenty-one million, two hundred one thousand, one hundred twelve".