1451221330 has 32 divisors (see below), whose sum is σ = 2961201600. Its totient is φ = 507632832.

The previous prime is 1451221309. The next prime is 1451221351. The reversal of 1451221330 is 331221541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1451221309) and next prime (1451221351).

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, 291300 + ... + 296239.

It is an arithmetic number, because the mean of its divisors is an integer number (92537550).

Almost surely, 2^1451221330 is an apocalyptic number.

1451221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1451221330 is an abundant number, since it is smaller than the sum of its proper divisors (1509980270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1451221330 is a wasteful number, since it uses less digits than its factorization.

1451221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587578.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1451221330 is about 38094.8990023599. The cubic root of 1451221330 is about 1132.1688915681.

Adding to 1451221330 its reverse (331221541), we get a palindrome (1782442871).

The spelling of 1451221330 in words is "one billion, four hundred fifty-one million, two hundred twenty-one thousand, three hundred thirty".