212111201211 has 32 divisors (see below), whose sum is σ = 368555217408. Its totient is φ = 105301486080.

The previous prime is 212111201161. The next prime is 212111201249. The reversal of 212111201211 is 112102111212.

It is a happy number.

It is not a de Polignac number, because 212111201211 - 2⁹ = 212111200699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212111201311) 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, 22847245 + ... + 22856526.

It is an arithmetic number, because the mean of its divisors is an integer number (11517350544).

Almost surely, 2^212111201211 is an apocalyptic number.

212111201211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212111201211 is a deficient number, since it is larger than the sum of its proper divisors (156444016197).

212111201211 is a wasteful number, since it uses less digits than its factorization.

212111201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45703811.

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

Adding to 212111201211 its reverse (112102111212), we get a palindrome (324213312423).

The spelling of 212111201211 in words is "two hundred twelve billion, one hundred eleven million, two hundred one thousand, two hundred eleven".