211211212001211 has 12 divisors (see below), whose sum is σ = 305083705524520. Its totient is φ = 140807085246720.

The previous prime is 211211212001203. The next prime is 211211212001221. The reversal of 211211212001211 is 112100212112112.

It is a happy number.

211211212001211 is a `hidden beast` number, since 21 + 1 + 211 + 21 + 200 + 1 + 211 = 666.

It is not a de Polignac number, because 211211212001211 - 2³ = 211211212001203 is a prime.

It is a super-2 number, since 2×211211212001211² (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 (211211212001221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28997350 + ... + 35542491.

Almost surely, 2^{211211212001211} is an apocalyptic number.

211211212001211 is a deficient number, since it is larger than the sum of its proper divisors (93872493523309).

211211212001211 is a wasteful number, since it uses less digits than its factorization.

211211212001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64903466 (or 64903463 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211211212001211 its reverse (112100212112112), we get a palindrome (323311424113323).

The spelling of 211211212001211 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twelve million, one thousand, two hundred eleven".