12220051505 has 8 divisors (see below), whose sum is σ = 14677484712. Its totient is φ = 9767092608.

The previous prime is 12220051463. The next prime is 12220051553. The reversal of 12220051505 is 50515002221.

It can be written as a sum of positive squares in 4 ways, for example, as 2167181809 + 10052869696 = 46553^2 + 100264^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12220051505 - 2¹⁰ = 12220050481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112564 + ... + 1123493.

It is an arithmetic number, because the mean of its divisors is an integer number (1834685589).

Almost surely, 2^12220051505 is an apocalyptic number.

It is an amenable number.

12220051505 is a deficient number, since it is larger than the sum of its proper divisors (2457433207).

12220051505 is a wasteful number, since it uses less digits than its factorization.

12220051505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237155.

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 12220051505 its reverse (50515002221), we get a palindrome (62735053726).

The spelling of 12220051505 in words is "twelve billion, two hundred twenty million, fifty-one thousand, five hundred five".