121286898 has 24 divisors (see below), whose sum is σ = 263144700. Its totient is φ = 40374144.

The previous prime is 121286887. The next prime is 121286909. The reversal of 121286898 is 898682121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121286887) and next prime (121286909).

It can be written as a sum of positive squares in 2 ways, for example, as 121286169 + 729 = 11013^2 + 27^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10398 + ... + 18726.

Almost surely, 2^121286898 is an apocalyptic number.

121286898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121286898 is an abundant number, since it is smaller than the sum of its proper divisors (141857802).

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

121286898 is a wasteful number, since it uses less digits than its factorization.

121286898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146 (or 9143 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 121286898 is about 11013.0330971990. The cubic root of 121286898 is about 494.9993510858. Note that the first 3 decimals are identical.

The spelling of 121286898 in words is "one hundred twenty-one million, two hundred eighty-six thousand, eight hundred ninety-eight".