121116150558 has 40 divisors (see below), whose sum is σ = 292266043608. Its totient is φ = 37266507216.

The previous prime is 121116150517. The next prime is 121116150581. The reversal of 121116150558 is 855051611121.

121116150558 is a `hidden beast` number, since 1 + 21 + 11 + 615 + 0 + 5 + 5 + 8 = 666.

It is a super-3 number, since 3×121116150558³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 19 ways as a sum of consecutive naturals, for example, 28752916 + ... + 28757127.

Almost surely, 2^121116150558 is an apocalyptic number.

121116150558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121116150558 is an abundant number, since it is smaller than the sum of its proper divisors (171149893050).

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

121116150558 is a wasteful number, since it uses less digits than its factorization.

121116150558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57510070 (or 57510061 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 36.

Adding to 121116150558 its reverse (855051611121), we get a palindrome (976167761679).

The spelling of 121116150558 in words is "one hundred twenty-one billion, one hundred sixteen million, one hundred fifty thousand, five hundred fifty-eight".