12155622515211 has 16 divisors (see below), whose sum is σ = 18596649593088. Its totient is φ = 6918396420000.

The previous prime is 12155622515131. The next prime is 12155622515221. The reversal of 12155622515211 is 11251522655121.

12155622515211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12155622515211 - 2¹⁸ = 12155622253067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12155622515211.

It is not an unprimeable number, because it can be changed into a prime (12155622515221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1153060800 + ... + 1153071341.

It is an arithmetic number, because the mean of its divisors is an integer number (1162290599568).

Almost surely, 2^{12155622515211} is an apocalyptic number.

12155622515211 is a deficient number, since it is larger than the sum of its proper divisors (6441027077877).

12155622515211 is a wasteful number, since it uses less digits than its factorization.

12155622515211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306132402.

The product of its digits is 60000, while the sum is 39.

The spelling of 12155622515211 in words is "twelve trillion, one hundred fifty-five billion, six hundred twenty-two million, five hundred fifteen thousand, two hundred eleven".