211023121233 has 4 divisors (see below), whose sum is σ = 281364161648. Its totient is φ = 140682080820.

The previous prime is 211023121219. The next prime is 211023121241. The reversal of 211023121233 is 332121320112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211023121233 - 2⁸ = 211023120977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211023121433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35170520203 + ... + 35170520208.

It is an arithmetic number, because the mean of its divisors is an integer number (70341040412).

Almost surely, 2^211023121233 is an apocalyptic number.

It is an amenable number.

211023121233 is a deficient number, since it is larger than the sum of its proper divisors (70341040415).

211023121233 is an equidigital number, since it uses as much as digits as its factorization.

211023121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70341040414.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211023121233 its reverse (332121320112), we get a palindrome (543144441345).

The spelling of 211023121233 in words is "two hundred eleven billion, twenty-three million, one hundred twenty-one thousand, two hundred thirty-three".