211121298 has 12 divisors (see below), whose sum is σ = 457429518. Its totient is φ = 70373760.

The previous prime is 211121257. The next prime is 211121299. The reversal of 211121298 is 892121112.

211121298 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 only one way, i.e., 207446409 + 3674889 = 14403^2 + 1917^2 .

It is not an unprimeable number, because it can be changed into a prime (211121299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5864463 + ... + 5864498.

Almost surely, 2^211121298 is an apocalyptic number.

211121298 is an abundant number, since it is smaller than the sum of its proper divisors (246308220).

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

211121298 is a wasteful number, since it uses less digits than its factorization.

211121298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11728969 (or 11728966 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 211121298 is about 14530.0136957953. The cubic root of 211121298 is about 595.4482397850.

It can be divided in two parts, 2111 and 21298, that added together give a square (23409 = 153²).

The spelling of 211121298 in words is "two hundred eleven million, one hundred twenty-one thousand, two hundred ninety-eight".