2221450451 has 8 divisors (see below), whose sum is σ = 2426232000. Its totient is φ = 2017140840.

The previous prime is 2221450393. The next prime is 2221450463. The reversal of 2221450451 is 1540541222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221450451 - 2¹⁴ = 2221434067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221450451.

It is not an unprimeable number, because it can be changed into a prime (2221450471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108101 + ... + 126998.

It is an arithmetic number, because the mean of its divisors is an integer number (303279000).

Almost surely, 2^2221450451 is an apocalyptic number.

2221450451 is a deficient number, since it is larger than the sum of its proper divisors (204781549).

2221450451 is a wasteful number, since it uses less digits than its factorization.

2221450451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235969.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2221450451 is about 47132.2654982762. The cubic root of 2221450451 is about 1304.8047937884.

Adding to 2221450451 its reverse (1540541222), we get a palindrome (3761991673).

The spelling of 2221450451 in words is "two billion, two hundred twenty-one million, four hundred fifty thousand, four hundred fifty-one".