10121998 has 8 divisors (see below), whose sum is σ = 15553440. Its totient is φ = 4937520.

The previous prime is 10121963. The next prime is 10121999. The reversal of 10121998 is 89912101.

10121998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121999) 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, 61638 + ... + 61801.

It is an arithmetic number, because the mean of its divisors is an integer number (1944180).

Almost surely, 2^10121998 is an apocalyptic number.

10121998 is a deficient number, since it is larger than the sum of its proper divisors (5431442).

10121998 is a wasteful number, since it uses less digits than its factorization.

10121998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123482.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 10121998 is about 3181.5087615784. The cubic root of 10121998 is about 216.3160525279.

The spelling of 10121998 in words is "ten million, one hundred twenty-one thousand, nine hundred ninety-eight".