212412021233 has 4 divisors (see below), whose sum is σ = 221647326528. Its totient is φ = 203176715940.

The previous prime is 212412021139. The next prime is 212412021251. The reversal of 212412021233 is 332120214212.

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 a cyclic number.

It is not a de Polignac number, because 212412021233 - 2²⁶ = 212344912369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 9235305271 = 212412021233 / (2 + 1 + 2 + 4 + 1 + 2 + 0 + 2 + 1 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212412021199 and 212412021208.

It is not an unprimeable number, because it can be changed into a prime (212412021433) 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, 4617652613 + ... + 4617652658.

It is an arithmetic number, because the mean of its divisors is an integer number (55411831632).

Almost surely, 2^212412021233 is an apocalyptic number.

212412021233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212412021233 is a deficient number, since it is larger than the sum of its proper divisors (9235305295).

212412021233 is an equidigital number, since it uses as much as digits as its factorization.

212412021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235305294.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 212412021233 its reverse (332120214212), we get a palindrome (544532235445).

The spelling of 212412021233 in words is "two hundred twelve billion, four hundred twelve million, twenty-one thousand, two hundred thirty-three".