12205544355 has 12 divisors (see below), whose sum is σ = 21156276960. Its totient is φ = 6509623632.

The previous prime is 12205544327. The next prime is 12205544359. The reversal of 12205544355 is 55344550221.

12205544355 is a `hidden beast` number, since 1 + 2 + 205 + 5 + 443 + 5 + 5 = 666.

It is not a de Polignac number, because 12205544355 - 2⁷ = 12205544227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12205544359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135617115 + ... + 135617204.

It is an arithmetic number, because the mean of its divisors is an integer number (1763023080).

Almost surely, 2^12205544355 is an apocalyptic number.

12205544355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12205544355 is a deficient number, since it is larger than the sum of its proper divisors (8950732605).

12205544355 is a wasteful number, since it uses less digits than its factorization.

12205544355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271234330 (or 271234327 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 12205544355 in words is "twelve billion, two hundred five million, five hundred forty-four thousand, three hundred fifty-five".