22210021201212 has 144 divisors (see below), whose sum is σ = 62709487687392. Its totient is φ = 6583320230400.

The previous prime is 22210021201133. The next prime is 22210021201217. The reversal of 22210021201212 is 21210212001222.

It is a happy number.

22210021201212 is a `hidden beast` number, since 22 + 210 + 0 + 21 + 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 not an unprimeable number, because it can be changed into a prime (22210021201217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4600738 + ... + 8098569.

Almost surely, 2^{22210021201212} is an apocalyptic number.

It is an amenable number.

22210021201212 is an abundant number, since it is smaller than the sum of its proper divisors (40499466486180).

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

22210021201212 is a wasteful number, since it uses less digits than its factorization.

22210021201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12699468 (or 12699463 counting only the distinct ones).

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

Adding to 22210021201212 its reverse (21210212001222), we get a palindrome (43420233202434).

The spelling of 22210021201212 in words is "twenty-two trillion, two hundred ten billion, twenty-one million, two hundred one thousand, two hundred twelve".