22121412012 has 90 divisors (see below), whose sum is σ = 67271379252. Its totient is φ = 6320398896.

The previous prime is 22121411971. The next prime is 22121412023. The reversal of 22121412012 is 21021412122.

22121412012 is a `hidden beast` number, since 221 + 21 + 412 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 680818 + ... + 712569.

Almost surely, 2^22121412012 is an apocalyptic number.

It is an amenable number.

22121412012 is an abundant number, since it is smaller than the sum of its proper divisors (45149967240).

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

22121412012 is a wasteful number, since it uses less digits than its factorization.

22121412012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393417 (or 1393399 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22121412012 its reverse (21021412122), we get a palindrome (43142824134).

The spelling of 22121412012 in words is "twenty-two billion, one hundred twenty-one million, four hundred twelve thousand, twelve".