211112232021 has 6 divisors (see below), whose sum is σ = 304939890710. Its totient is φ = 140741488008.

The previous prime is 211112232017. The next prime is 211112232053. The reversal of 211112232021 is 120232211112.

211112232021 is a `hidden beast` number, since 211 + 112 + 2 + 320 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 206196819921 + 4915412100 = 454089^2 + 70110^2 .

It is not a de Polignac number, because 211112232021 - 2² = 211112232017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211112231985 and 211112232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112236021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11728457326 + ... + 11728457343.

Almost surely, 2^211112232021 is an apocalyptic number.

It is an amenable number.

211112232021 is a deficient number, since it is larger than the sum of its proper divisors (93827658689).

211112232021 is a wasteful number, since it uses less digits than its factorization.

211112232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23456914675 (or 23456914672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211112232021 its reverse (120232211112), we get a palindrome (331344443133).

The spelling of 211112232021 in words is "two hundred eleven billion, one hundred twelve million, two hundred thirty-two thousand, twenty-one".