2116869901 has 2 divisors, whose sum is σ = 2116869902. Its totient is φ = 2116869900.

The previous prime is 2116869871. The next prime is 2116869913. The reversal of 2116869901 is 1099686112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357922500 + 758947401 = 36850^2 + 27549^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116869901 - 2⁷ = 2116869773 is a prime.

It is a super-2 number, since 2×2116869901² = 8962276355519499602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116869941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058434950 + 1058434951.

It is an arithmetic number, because the mean of its divisors is an integer number (1058434951).

Almost surely, 2^2116869901 is an apocalyptic number.

It is an amenable number.

2116869901 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116869901 is an equidigital number, since it uses as much as digits as its factorization.

2116869901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 2116869901 is about 46009.4544740535. The cubic root of 2116869901 is about 1283.9991097793. Note that the first 3 decimals are identical.

The spelling of 2116869901 in words is "two billion, one hundred sixteen million, eight hundred sixty-nine thousand, nine hundred one".