211122221101212 has 48 divisors (see below), whose sum is σ = 493512488268800. Its totient is φ = 70246427549760.

The previous prime is 211122221101199. The next prime is 211122221101229. The reversal of 211122221101212 is 212101122221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22316589 + ... + 30336027.

Almost surely, 2^{211122221101212} is an apocalyptic number.

It is an amenable number.

211122221101212 is an abundant number, since it is smaller than the sum of its proper divisors (282390267167588).

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

211122221101212 is a wasteful number, since it uses less digits than its factorization.

211122221101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8023426 (or 8023424 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211122221101212 its reverse (212101122221112), we get a palindrome (423223343322324).

The spelling of 211122221101212 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred one thousand, two hundred twelve".