121112022221998 has 8 divisors (see below), whose sum is σ = 192354388234992. Its totient is φ = 56993892810336.

The previous prime is 121112022221959. The next prime is 121112022222001. The reversal of 121112022221998 is 899122220211121.

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

It is a super-2 number, since 2×121112022221998² (a number of 29 digits) contains 22 as substring.

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, 1781059150290 + ... + 1781059150357.

It is an arithmetic number, because the mean of its divisors is an integer number (24044298529374).

Almost surely, 2^{121112022221998} is an apocalyptic number.

121112022221998 is a deficient number, since it is larger than the sum of its proper divisors (71242366012994).

121112022221998 is a wasteful number, since it uses less digits than its factorization.

121112022221998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562118300666.

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 121112022221998 in words is "one hundred twenty-one trillion, one hundred twelve billion, twenty-two million, two hundred twenty-one thousand, nine hundred ninety-eight".