201212111111222 has 16 divisors (see below), whose sum is σ = 302016007913760. Its totient is φ = 100540109976192.

The previous prime is 201212111111177. The next prime is 201212111111293. The reversal of 201212111111222 is 222111111212102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201212111111194 and 201212111111203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309103904 + ... + 309754172.

It is an arithmetic number, because the mean of its divisors is an integer number (18876000494610).

Almost surely, 2^{201212111111222} is an apocalyptic number.

201212111111222 is a deficient number, since it is larger than the sum of its proper divisors (100803896802538).

201212111111222 is a wasteful number, since it uses less digits than its factorization.

201212111111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751447.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 201212111111222 its reverse (222111111212102), we get a palindrome (423323222323324).

The spelling of 201212111111222 in words is "two hundred one trillion, two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".