211120011 has 12 divisors (see below), whose sum is σ = 307146840. Its totient is φ = 139733280.

The previous prime is 211120009. The next prime is 211120033. The reversal of 211120011 is 110021112.

It is a happy number.

It is not a de Polignac number, because 211120011 - 2¹ = 211120009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211119975 and 211120002.

It is not an unprimeable number, because it can be changed into a prime (211120051) 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, 83130 + ... + 85631.

It is an arithmetic number, because the mean of its divisors is an integer number (25595570).

Almost surely, 2^211120011 is an apocalyptic number.

211120011 is a deficient number, since it is larger than the sum of its proper divisors (96026829).

211120011 is a wasteful number, since it uses less digits than its factorization.

211120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168906 (or 168903 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 211120011 is about 14529.9694080889. The cubic root of 211120011 is about 595.4470298275.

Adding to 211120011 its reverse (110021112), we get a palindrome (321141123).

It can be divided in two parts, 2111 and 20011, that added together give a palindrome (22122).

The spelling of 211120011 in words is "two hundred eleven million, one hundred twenty thousand, eleven".