2122165755 has 24 divisors (see below), whose sum is σ = 3697108272. Its totient is φ = 1126071744.

The previous prime is 2122165733. The next prime is 2122165769. The reversal of 2122165755 is 5575612212.

It is not a de Polignac number, because 2122165755 - 2¹² = 2122161659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110829 + ... + 128558.

It is an arithmetic number, because the mean of its divisors is an integer number (154046178).

Almost surely, 2^2122165755 is an apocalyptic number.

2122165755 is a deficient number, since it is larger than the sum of its proper divisors (1574942517).

2122165755 is a wasteful number, since it uses less digits than its factorization.

2122165755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239595 (or 239592 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 2122165755 is about 46066.9703258202. The cubic root of 2122165755 is about 1285.0689612594.

Adding to 2122165755 its reverse (5575612212), we get a palindrome (7697777967).

The spelling of 2122165755 in words is "two billion, one hundred twenty-two million, one hundred sixty-five thousand, seven hundred fifty-five".