22121122112112 has 80 divisors (see below), whose sum is σ = 60403530513920. Its totient is φ = 6956631475200.

The previous prime is 22121122112101. The next prime is 22121122112123. The reversal of 22121122112112 is 21121122112122.

It is an interprime number because it is at equal distance from previous prime (22121122112101) and next prime (22121122112123).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50103064 + ... + 50542647.

It is an arithmetic number, because the mean of its divisors is an integer number (755044131424).

Almost surely, 2^{22121122112112} is an apocalyptic number.

It is an amenable number.

22121122112112 is an abundant number, since it is smaller than the sum of its proper divisors (38282408401808).

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

22121122112112 is a wasteful number, since it uses less digits than its factorization.

22121122112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100645982 (or 100645976 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 22121122112112 its reverse (21121122112122), we get a palindrome (43242244224234).

The spelling of 22121122112112 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twelve".