121899498 has 16 divisors (see below), whose sum is σ = 278627520. Its totient is φ = 34828416.

The previous prime is 121899461. The next prime is 121899511. The reversal of 121899498 is 894998121.

It is a super-2 number, since 2×121899498² = 29718975225304008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121899498.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451143 + ... + 1451226.

It is an arithmetic number, because the mean of its divisors is an integer number (17414220).

Almost surely, 2^121899498 is an apocalyptic number.

121899498 is an abundant number, since it is smaller than the sum of its proper divisors (156728022).

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

121899498 is a wasteful number, since it uses less digits than its factorization.

121899498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902381.

The product of its digits is 373248, while the sum is 51.

The square root of 121899498 is about 11040.8105680697. The cubic root of 121899498 is about 495.8313384442.

The spelling of 121899498 in words is "one hundred twenty-one million, eight hundred ninety-nine thousand, four hundred ninety-eight".