10217220051 has 4 divisors (see below), whose sum is σ = 13622960072. Its totient is φ = 6811480032.

The previous prime is 10217220047. The next prime is 10217220053. The reversal of 10217220051 is 15002271201.

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

It is not a de Polignac number, because 10217220051 - 2² = 10217220047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10217220053) 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, 1702870006 + ... + 1702870011.

It is an arithmetic number, because the mean of its divisors is an integer number (3405740018).

Almost surely, 2^10217220051 is an apocalyptic number.

10217220051 is a deficient number, since it is larger than the sum of its proper divisors (3405740021).

10217220051 is an equidigital number, since it uses as much as digits as its factorization.

10217220051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405740020.

The product of its (nonzero) digits is 280, while the sum is 21.

Adding to 10217220051 its reverse (15002271201), we get a palindrome (25219491252).

The spelling of 10217220051 in words is "ten billion, two hundred seventeen million, two hundred twenty thousand, fifty-one".