121824111198 has 16 divisors (see below), whose sum is σ = 243655713936. Its totient is φ = 40606788480.

The previous prime is 121824111161. The next prime is 121824111259. The reversal of 121824111198 is 891111428121.

It is a happy number.

It is a super-2 number, since 2×121824111198² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88411 + ... + 501462.

It is an arithmetic number, because the mean of its divisors is an integer number (15228482121).

Almost surely, 2^121824111198 is an apocalyptic number.

121824111198 is an abundant number, since it is smaller than the sum of its proper divisors (121831602738).

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

121824111198 is a wasteful number, since it uses less digits than its factorization.

121824111198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624299.

The product of its digits is 9216, while the sum is 39.

The spelling of 121824111198 in words is "one hundred twenty-one billion, eight hundred twenty-four million, one hundred eleven thousand, one hundred ninety-eight".