12021210998 has 8 divisors (see below), whose sum is σ = 18086294280. Its totient is φ = 5992446240.

The previous prime is 12021210983. The next prime is 12021211117. The reversal of 12021210998 is 89901212021.

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, 9078803 + ... + 9080126.

It is an arithmetic number, because the mean of its divisors is an integer number (2260786785).

Almost surely, 2^12021210998 is an apocalyptic number.

12021210998 is a deficient number, since it is larger than the sum of its proper divisors (6065083282).

12021210998 is a wasteful number, since it uses less digits than its factorization.

12021210998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18159262.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 12021210998 in words is "twelve billion, twenty-one million, two hundred ten thousand, nine hundred ninety-eight".