211122021211011 has 12 divisors (see below), whose sum is σ = 304957710780840. Its totient is φ = 140746315613280.

The previous prime is 211122021211001. The next prime is 211122021211019. The reversal of 211122021211011 is 110112120221112.

It is a happy number.

211122021211011 is a `hidden beast` number, since 2 + 111 + 220 + 212 + 110 + 11 = 666.

It is not a de Polignac number, because 211122021211011 - 2¹¹ = 211122021208963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211122021211019) 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, 140756505 + ... + 142248506.

It is an arithmetic number, because the mean of its divisors is an integer number (25413142565070).

Almost surely, 2^{211122021211011} is an apocalyptic number.

211122021211011 is a deficient number, since it is larger than the sum of its proper divisors (93835689569829).

211122021211011 is a wasteful number, since it uses less digits than its factorization.

211122021211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283087906 (or 283087903 counting only the distinct ones).

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

Adding to 211122021211011 its reverse (110112120221112), we get a palindrome (321234141432123).

The spelling of 211122021211011 in words is "two hundred eleven trillion, one hundred twenty-two billion, twenty-one million, two hundred eleven thousand, eleven".