211099122 has 40 divisors (see below), whose sum is σ = 509409516. Its totient is φ = 64952928.

The previous prime is 211099103. The next prime is 211099127. The reversal of 211099122 is 221990112.

211099122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 172423161 + 38675961 = 13131^2 + 6219^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (211099127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48013 + ... + 52224.

Almost surely, 2^211099122 is an apocalyptic number.

211099122 is an abundant number, since it is smaller than the sum of its proper divisors (298310394).

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

211099122 is a wasteful number, since it uses less digits than its factorization.

211099122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100264 (or 100255 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 211099122 is about 14529.2505656692. The cubic root of 211099122 is about 595.4273905976.

The spelling of 211099122 in words is "two hundred eleven million, ninety-nine thousand, one hundred twenty-two".