211116040 has 16 divisors (see below), whose sum is σ = 475011180. Its totient is φ = 84446400.

The previous prime is 211115959. The next prime is 211116067. The reversal of 211116040 is 40611112.

It can be written as a sum of positive squares in 2 ways, for example, as 195608196 + 15507844 = 13986^2 + 3938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638911 + ... + 2638990.

Almost surely, 2^211116040 is an apocalyptic number.

211116040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211116040 is an abundant number, since it is smaller than the sum of its proper divisors (263895140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211116040 is a wasteful number, since it uses less digits than its factorization.

211116040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277912 (or 5277908 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 211116040 is about 14529.8327588448. The cubic root of 211116040 is about 595.4432965086.

Adding to 211116040 its reverse (40611112), we get a palindrome (251727152).

The spelling of 211116040 in words is "two hundred eleven million, one hundred sixteen thousand, forty".