212133454 has 32 divisors (see below), whose sum is σ = 351086400. Its totient is φ = 95526912.

The previous prime is 212133443. The next prime is 212133487. The reversal of 212133454 is 454331212.

212133454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353847 + ... + 354445.

It is an arithmetic number, because the mean of its divisors is an integer number (10971450).

Almost surely, 2^212133454 is an apocalyptic number.

212133454 is a deficient number, since it is larger than the sum of its proper divisors (138952946).

212133454 is a wasteful number, since it uses less digits than its factorization.

212133454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924.

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

The square root of 212133454 is about 14564.8018867405. The cubic root of 212133454 is about 596.3982875219.

Adding to 212133454 its reverse (454331212), we get a palindrome (666464666).

The spelling of 212133454 in words is "two hundred twelve million, one hundred thirty-three thousand, four hundred fifty-four".