121308998 has 8 divisors (see below), whose sum is σ = 182047008. Its totient is φ = 60626664.

The previous prime is 121308989. The next prime is 121309009. The reversal of 121308998 is 899803121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7961 + ... + 17492.

It is an arithmetic number, because the mean of its divisors is an integer number (22755876).

Almost surely, 2^121308998 is an apocalyptic number.

121308998 is a deficient number, since it is larger than the sum of its proper divisors (60738010).

121308998 is a wasteful number, since it uses less digits than its factorization.

121308998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27838.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 121308998 is about 11014.0364081476. The cubic root of 121308998 is about 495.0294142981.

The spelling of 121308998 in words is "one hundred twenty-one million, three hundred eight thousand, nine hundred ninety-eight".