451001036223221 has 48 divisors (see below), whose sum is σ = 525254024433600. Its totient is φ = 385614896494080.

The previous prime is 451001036223209. The next prime is 451001036223239. The reversal of 451001036223221 is 122322630100154.

It is a de Polignac number, because none of the positive numbers 2^k-451001036223221 is a prime.

It is a super-2 number, since 2×451001036223221² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451001036223271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40988909906 + ... + 40988920908.

It is an arithmetic number, because the mean of its divisors is an integer number (10942792175700).

Almost surely, 2^{451001036223221} is an apocalyptic number.

It is an amenable number.

451001036223221 is a deficient number, since it is larger than the sum of its proper divisors (74252988210379).

451001036223221 is a wasteful number, since it uses less digits than its factorization.

451001036223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23090 (or 23079 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 451001036223221 its reverse (122322630100154), we get a palindrome (573323666323375).

The spelling of 451001036223221 in words is "four hundred fifty-one trillion, one billion, thirty-six million, two hundred twenty-three thousand, two hundred twenty-one".