212233453 has 4 divisors (see below), whose sum is σ = 213504480. Its totient is φ = 210962428.

The previous prime is 212233391. The next prime is 212233481. The reversal of 212233453 is 354332212.

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 212233453 - 2¹⁷ = 212102381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212237453) 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, 635263 + ... + 635596.

It is an arithmetic number, because the mean of its divisors is an integer number (53376120).

Almost surely, 2^212233453 is an apocalyptic number.

It is an amenable number.

212233453 is a deficient number, since it is larger than the sum of its proper divisors (1271027).

212233453 is a wasteful number, since it uses less digits than its factorization.

212233453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271026.

The product of its digits is 4320, while the sum is 25.

The square root of 212233453 is about 14568.2343816950. The cubic root of 212233453 is about 596.4919861857.

Adding to 212233453 its reverse (354332212), we get a palindrome (566565665).

The spelling of 212233453 in words is "two hundred twelve million, two hundred thirty-three thousand, four hundred fifty-three".