2122155204555 has 16 divisors (see below), whose sum is σ = 3410275618080. Its totient is φ = 1126873678848.

The previous prime is 2122155204551. The next prime is 2122155204571. The reversal of 2122155204555 is 5554025512212.

It is not a de Polignac number, because 2122155204555 - 2² = 2122155204551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122155204551) 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, 308898342 + ... + 308905211.

It is an arithmetic number, because the mean of its divisors is an integer number (213142226130).

Almost surely, 2^{2122155204555} is an apocalyptic number.

2122155204555 is a deficient number, since it is larger than the sum of its proper divisors (1288120413525).

2122155204555 is a wasteful number, since it uses less digits than its factorization.

2122155204555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617803790.

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 2122155204555 in words is "two trillion, one hundred twenty-two billion, one hundred fifty-five million, two hundred four thousand, five hundred fifty-five".