211211001011211 has 16 divisors (see below), whose sum is σ = 283136378923008. Its totient is φ = 140046724848800.

The previous prime is 211211001011209. The next prime is 211211001011251. The reversal of 211211001011211 is 112110100112112.

It is a cyclic number.

It is not a de Polignac number, because 211211001011211 - 2¹ = 211211001011209 is a prime.

It is a super-2 number, since 2×211211001011211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211211001011251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27353280 + ... + 34214381.

It is an arithmetic number, because the mean of its divisors is an integer number (17696023682688).

Almost surely, 2^{211211001011211} is an apocalyptic number.

211211001011211 is a deficient number, since it is larger than the sum of its proper divisors (71925377911797).

211211001011211 is a wasteful number, since it uses less digits than its factorization.

211211001011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61573842.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211211001011211 its reverse (112110100112112), we get a palindrome (323321101123323).

The spelling of 211211001011211 in words is "two hundred eleven trillion, two hundred eleven billion, one million, eleven thousand, two hundred eleven".