212454133 has 4 divisors (see below), whose sum is σ = 213982720. Its totient is φ = 210925548.

The previous prime is 212454113. The next prime is 212454139. The reversal of 212454133 is 331454212.

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 a de Polignac number, because none of the positive numbers 2^k-212454133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212454098 and 212454107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212454139) 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, 764085 + ... + 764362.

It is an arithmetic number, because the mean of its divisors is an integer number (53495680).

Almost surely, 2^212454133 is an apocalyptic number.

It is an amenable number.

212454133 is a deficient number, since it is larger than the sum of its proper divisors (1528587).

212454133 is a wasteful number, since it uses less digits than its factorization.

212454133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528586.

The product of its digits is 2880, while the sum is 25.

The square root of 212454133 is about 14575.8064270901. The cubic root of 212454133 is about 596.6986583695.

The spelling of 212454133 in words is "two hundred twelve million, four hundred fifty-four thousand, one hundred thirty-three".