201211112001222 has 48 divisors (see below), whose sum is σ = 436174602070272. Its totient is φ = 67036964480640.

The previous prime is 201211112001181. The next prime is 201211112001227. The reversal of 201211112001222 is 222100211112102.

201211112001222 is a `hidden beast` number, since 20 + 1 + 211 + 11 + 200 + 1 + 222 = 666.

201211112001222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 201211112001195 and 201211112001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211112001227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302232858 + ... + 302897874.

It is an arithmetic number, because the mean of its divisors is an integer number (9086970876464).

Almost surely, 2^{201211112001222} is an apocalyptic number.

201211112001222 is an abundant number, since it is smaller than the sum of its proper divisors (234963490069050).

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

201211112001222 is a wasteful number, since it uses less digits than its factorization.

201211112001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673373 (or 673370 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201211112001222 its reverse (222100211112102), we get a palindrome (423311323113324).

The spelling of 201211112001222 in words is "two hundred one trillion, two hundred eleven billion, one hundred twelve million, one thousand, two hundred twenty-two".