10221451 has 4 divisors (see below), whose sum is σ = 10235952. Its totient is φ = 10206952.

The previous prime is 10221443. The next prime is 10221457. The reversal of 10221451 is 15412201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15412201 = 7 ⋅2201743.

It is a cyclic number.

It is not a de Polignac number, because 10221451 - 2³ = 10221443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221457) 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, 6136 + ... + 7621.

It is an arithmetic number, because the mean of its divisors is an integer number (2558988).

Almost surely, 2^10221451 is an apocalyptic number.

10221451 is a deficient number, since it is larger than the sum of its proper divisors (14501).

10221451 is an equidigital number, since it uses as much as digits as its factorization.

10221451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14500.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 10221451 is about 3197.1004050546. The cubic root of 10221451 is about 217.0222109823.

Adding to 10221451 its reverse (15412201), we get a palindrome (25633652).

The spelling of 10221451 in words is "ten million, two hundred twenty-one thousand, four hundred fifty-one".