98213121 has 8 divisors (see below), whose sum is σ = 145500960. Its totient is φ = 65475396.

The previous prime is 98213113. The next prime is 98213123. The reversal of 98213121 is 12131289.

It is not a de Polignac number, because 98213121 - 2³ = 98213113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3637523 = 98213121 / (9 + 8 + 2 + 1 + 3 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (98213123) 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 7 ways as a sum of consecutive naturals, for example, 1818735 + ... + 1818788.

It is an arithmetic number, because the mean of its divisors is an integer number (18187620).

Almost surely, 2^98213121 is an apocalyptic number.

It is an amenable number.

98213121 is a deficient number, since it is larger than the sum of its proper divisors (47287839).

98213121 is a wasteful number, since it uses less digits than its factorization.

98213121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637532 (or 3637526 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 98213121 is about 9910.2533267319. The cubic root of 98213121 is about 461.3775983821.

The spelling of 98213121 in words is "ninety-eight million, two hundred thirteen thousand, one hundred twenty-one".