212211101211 has 32 divisors (see below), whose sum is σ = 291737272320. Its totient is φ = 137138985984.

The previous prime is 212211101203. The next prime is 212211101261. The reversal of 212211101211 is 112101112212.

It is a happy number.

It is not a de Polignac number, because 212211101211 - 2³ = 212211101203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212211101261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26492575 + ... + 26500583.

It is an arithmetic number, because the mean of its divisors is an integer number (9116789760).

Almost surely, 2^212211101211 is an apocalyptic number.

212211101211 is a deficient number, since it is larger than the sum of its proper divisors (79526171109).

212211101211 is a wasteful number, since it uses less digits than its factorization.

212211101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9835.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212211101211 its reverse (112101112212), we get a palindrome (324312213423).

The spelling of 212211101211 in words is "two hundred twelve billion, two hundred eleven million, one hundred one thousand, two hundred eleven".