212021121233 has 8 divisors (see below), whose sum is σ = 215486711808. Its totient is φ = 208570698144.

The previous prime is 212021121227. The next prime is 212021121269. The reversal of 212021121233 is 332121120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021121233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212021121833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3763685 + ... + 3819602.

It is an arithmetic number, because the mean of its divisors is an integer number (26935838976).

Almost surely, 2^212021121233 is an apocalyptic number.

It is an amenable number.

212021121233 is a deficient number, since it is larger than the sum of its proper divisors (3465590575).

212021121233 is an equidigital number, since it uses as much as digits as its factorization.

212021121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583743.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212021121233 its reverse (332121120212), we get a palindrome (544142241445).

The spelling of 212021121233 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred thirty-three".