222100201201212 has 72 divisors (see below), whose sum is σ = 611346591382800. Its totient is φ = 67718391648768.

The previous prime is 222100201201199. The next prime is 222100201201213. The reversal of 222100201201212 is 212102102001222.

It is a happy number.

222100201201212 is a `hidden beast` number, since 22 + 210 + 0 + 20 + 1 + 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 (222100201201213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5598392173 + ... + 5598431844.

Almost surely, 2^{222100201201212} is an apocalyptic number.

It is an amenable number.

222100201201212 is an abundant number, since it is smaller than the sum of its proper divisors (389246390181588).

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

222100201201212 is a wasteful number, since it uses less digits than its factorization.

222100201201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11196824075 (or 11196824070 counting only the distinct ones).

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

Adding to 222100201201212 its reverse (212102102001222), we get a palindrome (434202303202434).

The spelling of 222100201201212 in words is "two hundred twenty-two trillion, one hundred billion, two hundred one million, two hundred one thousand, two hundred twelve".