2117922455 has 32 divisors (see below), whose sum is σ = 2929858560. Its totient is φ = 1454618880.

The previous prime is 2117922437. The next prime is 2117922467. The reversal of 2117922455 is 5542297112.

It is not a de Polignac number, because 2117922455 - 2¹² = 2117918359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89339 + ... + 110531.

It is an arithmetic number, because the mean of its divisors is an integer number (91558080).

Almost surely, 2^2117922455 is an apocalyptic number.

2117922455 is a deficient number, since it is larger than the sum of its proper divisors (811936105).

2117922455 is a wasteful number, since it uses less digits than its factorization.

2117922455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21311.

The product of its digits is 50400, while the sum is 38.

The square root of 2117922455 is about 46020.8915059237. The cubic root of 2117922455 is about 1284.2118853283.

It can be divided in two parts, 21179 and 22455, that added together give a palindrome (43634).

The spelling of 2117922455 in words is "two billion, one hundred seventeen million, nine hundred twenty-two thousand, four hundred fifty-five".