213211313233 has 4 divisors (see below), whose sum is σ = 216132016228. Its totient is φ = 210290610240.

The previous prime is 213211313191. The next prime is 213211313261. The reversal of 213211313233 is 332313112312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81055798209 + 132155515024 = 284703^2 + 363532^2 .

It is a cyclic number.

It is not a de Polignac number, because 213211313233 - 2¹⁷ = 213211182161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213211313198 and 213211313207.

It is not an unprimeable number, because it can be changed into a prime (213211313033) 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, 1460351388 + ... + 1460351533.

It is an arithmetic number, because the mean of its divisors is an integer number (54033004057).

Almost surely, 2^213211313233 is an apocalyptic number.

It is an amenable number.

213211313233 is a deficient number, since it is larger than the sum of its proper divisors (2920702995).

213211313233 is an equidigital number, since it uses as much as digits as its factorization.

213211313233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920702994.

The product of its digits is 1944, while the sum is 25.

Adding to 213211313233 its reverse (332313112312), we get a palindrome (545524425545).

The spelling of 213211313233 in words is "two hundred thirteen billion, two hundred eleven million, three hundred thirteen thousand, two hundred thirty-three".