10217215551 has 8 divisors (see below), whose sum is σ = 13624228864. Its totient is φ = 6810839640.

The previous prime is 10217215531. The next prime is 10217215559. The reversal of 10217215551 is 15551271201.

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

It is not a de Polignac number, because 10217215551 - 2³³ = 1627280959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10217215559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120601 + ... + 187026.

It is an arithmetic number, because the mean of its divisors is an integer number (1703028608).

Almost surely, 2^10217215551 is an apocalyptic number.

10217215551 is a deficient number, since it is larger than the sum of its proper divisors (3407013313).

10217215551 is a wasteful number, since it uses less digits than its factorization.

10217215551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318701.

The product of its (nonzero) digits is 3500, while the sum is 30.

Adding to 10217215551 its reverse (15551271201), we get a palindrome (25768486752).

The spelling of 10217215551 in words is "ten billion, two hundred seventeen million, two hundred fifteen thousand, five hundred fifty-one".