12200254555 has 4 divisors (see below), whose sum is σ = 14640305472. Its totient is φ = 9760203640.

The previous prime is 12200254543. The next prime is 12200254621. The reversal of 12200254555 is 55545200221.

It is a happy number.

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

It is not a de Polignac number, because 12200254555 - 2⁵ = 12200254523 is a prime.

It is a super-2 number, since 2×12200254555² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220025451 + ... + 1220025460.

It is an arithmetic number, because the mean of its divisors is an integer number (3660076368).

Almost surely, 2^12200254555 is an apocalyptic number.

12200254555 is a deficient number, since it is larger than the sum of its proper divisors (2440050917).

12200254555 is an equidigital number, since it uses as much as digits as its factorization.

12200254555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440050916.

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 12200254555 its reverse (55545200221), we get a palindrome (67745454776).

The spelling of 12200254555 in words is "twelve billion, two hundred million, two hundred fifty-four thousand, five hundred fifty-five".