22010221201212 has 72 divisors (see below), whose sum is σ = 57590576150016. Its totient is φ = 7082241796224.

The previous prime is 22010221201207. The next prime is 22010221201253. The reversal of 22010221201212 is 21210212201022.

It is a happy number.

22010221201212 is a `hidden beast` number, since 2 + 20 + 10 + 221 + 201 + 212 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64886703 + ... + 65225030.

Almost surely, 2^{22010221201212} is an apocalyptic number.

It is an amenable number.

22010221201212 is an abundant number, since it is smaller than the sum of its proper divisors (35580354948804).

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

22010221201212 is a wasteful number, since it uses less digits than its factorization.

22010221201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130111907 (or 130111902 counting only the distinct ones).

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

Adding to 22010221201212 its reverse (21210212201022), we get a palindrome (43220433402234).

The spelling of 22010221201212 in words is "twenty-two trillion, ten billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".