98211121 has 4 divisors (see below), whose sum is σ = 98284644. Its totient is φ = 98137600.

The previous prime is 98211109. The next prime is 98211149. The reversal of 98211121 is 12111289.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12111289 = 47 ⋅257687.

It can be written as a sum of positive squares in 2 ways, for example, as 53802225 + 44408896 = 7335^2 + 6664^2 .

It is a cyclic number.

It is not a de Polignac number, because 98211121 - 2¹¹ = 98209073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98211151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34720 + ... + 37441.

It is an arithmetic number, because the mean of its divisors is an integer number (24571161).

Almost surely, 2^98211121 is an apocalyptic number.

It is an amenable number.

98211121 is a deficient number, since it is larger than the sum of its proper divisors (73523).

98211121 is a wasteful number, since it uses less digits than its factorization.

98211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73522.

The product of its digits is 288, while the sum is 25.

The square root of 98211121 is about 9910.1524206240. The cubic root of 98211121 is about 461.3744665485.

The spelling of 98211121 in words is "ninety-eight million, two hundred eleven thousand, one hundred twenty-one".