211122202011111 has 48 divisors (see below), whose sum is σ = 314338208970240. Its totient is φ = 136460023539840.

The previous prime is 211122202011101. The next prime is 211122202011163. The reversal of 211122202011111 is 111110202221112.

It is a happy number.

211122202011111 is a `hidden beast` number, since 21 + 112 + 220 + 201 + 1 + 111 = 666.

It is not a de Polignac number, because 211122202011111 - 2⁵ = 211122202011079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122202011101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 663081810 + ... + 663400128.

It is an arithmetic number, because the mean of its divisors is an integer number (6548712686880).

Almost surely, 2^{211122202011111} is an apocalyptic number.

211122202011111 is a deficient number, since it is larger than the sum of its proper divisors (103216006959129).

211122202011111 is a wasteful number, since it uses less digits than its factorization.

211122202011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329556 (or 329553 counting only the distinct ones).

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

Adding to 211122202011111 its reverse (111110202221112), we get a palindrome (322232404232223).

The spelling of 211122202011111 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred two million, eleven thousand, one hundred eleven".