211211220111211 has 8 divisors (see below), whose sum is σ = 213219167588000. Its totient is φ = 209211288393600.

The previous prime is 211211220111193. The next prime is 211211220111247. The reversal of 211211220111211 is 112111022112112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211211220111211 - 2²⁹ = 211210683240299 is a prime.

It is a super-2 number, since 2×211211220111211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211211220111611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003886846 + ... + 2003992243.

It is an arithmetic number, because the mean of its divisors is an integer number (26652395948500).

Almost surely, 2^{211211220111211} is an apocalyptic number.

211211220111211 is a deficient number, since it is larger than the sum of its proper divisors (2007947476789).

211211220111211 is a wasteful number, since it uses less digits than its factorization.

211211220111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007879589.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211211220111211 its reverse (112111022112112), we get a palindrome (323322242223323).

The spelling of 211211220111211 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred eleven thousand, two hundred eleven".