22120121212212 has 48 divisors (see below), whose sum is σ = 51791291482112. Its totient is φ = 7348012277760.

The previous prime is 22120121212159. The next prime is 22120121212229. The reversal of 22120121212212 is 21221212102122.

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, 7250637 + ... + 9839307.

Almost surely, 2^{22120121212212} is an apocalyptic number.

It is an amenable number.

22120121212212 is an abundant number, since it is smaller than the sum of its proper divisors (29671170269900).

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

22120121212212 is a wasteful number, since it uses less digits than its factorization.

22120121212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591128 (or 2591126 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22120121212212 its reverse (21221212102122), we get a palindrome (43341333314334).

The spelling of 22120121212212 in words is "twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".