12122545577 has 16 divisors (see below), whose sum is σ = 13091950080. Its totient is φ = 11190379200.

The previous prime is 12122545573. The next prime is 12122545607. The reversal of 12122545577 is 77554522121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12122545577 - 2² = 12122545573 is a prime.

It is a super-2 number, since 2×12122545577² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122545571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2739827 + ... + 2744247.

It is an arithmetic number, because the mean of its divisors is an integer number (818246880).

Almost surely, 2^12122545577 is an apocalyptic number.

It is an amenable number.

12122545577 is a deficient number, since it is larger than the sum of its proper divisors (969404503).

12122545577 is a wasteful number, since it uses less digits than its factorization.

12122545577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8584.

The product of its digits is 196000, while the sum is 41.

The spelling of 12122545577 in words is "twelve billion, one hundred twenty-two million, five hundred forty-five thousand, five hundred seventy-seven".