2003222451 has 4 divisors (see below), whose sum is σ = 2670963272. Its totient is φ = 1335481632.

The previous prime is 2003222447. The next prime is 2003222453. The reversal of 2003222451 is 1542223002.

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

It is not a de Polignac number, because 2003222451 - 2² = 2003222447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003222453) 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, 333870406 + ... + 333870411.

It is an arithmetic number, because the mean of its divisors is an integer number (667740818).

Almost surely, 2^2003222451 is an apocalyptic number.

2003222451 is a deficient number, since it is larger than the sum of its proper divisors (667740821).

2003222451 is an equidigital number, since it uses as much as digits as its factorization.

2003222451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667740820.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2003222451 is about 44757.3731467788. The cubic root of 2003222451 is about 1260.5973591038.

Adding to 2003222451 its reverse (1542223002), we get a palindrome (3545445453).

The spelling of 2003222451 in words is "two billion, three million, two hundred twenty-two thousand, four hundred fifty-one".