451322212 has 24 divisors (see below), whose sum is σ = 864394272. Its totient is φ = 204484800.

The previous prime is 451322197. The next prime is 451322213. The reversal of 451322212 is 212223154.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (451322213) 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, 2614 + ... + 30157.

It is an arithmetic number, because the mean of its divisors is an integer number (36016428).

Almost surely, 2^451322212 is an apocalyptic number.

It is an amenable number.

451322212 is a deficient number, since it is larger than the sum of its proper divisors (413072060).

451322212 is a wasteful number, since it uses less digits than its factorization.

451322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33099 (or 33097 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 451322212 is about 21244.3454123680. The cubic root of 451322212 is about 767.0592344501.

Adding to 451322212 its reverse (212223154), we get a palindrome (663545366).

The spelling of 451322212 in words is "four hundred fifty-one million, three hundred twenty-two thousand, two hundred twelve".