451221351203 has 4 divisors (see below), whose sum is σ = 515681544240. Its totient is φ = 386761158168.

The previous prime is 451221351197. The next prime is 451221351209. The reversal of 451221351203 is 302153122154.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (451221351197) and next prime (451221351209).

It is not a de Polignac number, because 451221351203 - 2⁴ = 451221351187 is a prime.

It is a super-2 number, since 2×451221351203² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451221351209) 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, 32230096508 + ... + 32230096521.

It is an arithmetic number, because the mean of its divisors is an integer number (128920386060).

Almost surely, 2^451221351203 is an apocalyptic number.

451221351203 is a deficient number, since it is larger than the sum of its proper divisors (64460193037).

451221351203 is an equidigital number, since it uses as much as digits as its factorization.

451221351203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64460193036.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 451221351203 its reverse (302153122154), we get a palindrome (753374473357).

The spelling of 451221351203 in words is "four hundred fifty-one billion, two hundred twenty-one million, three hundred fifty-one thousand, two hundred three".