121101116850 has 384 divisors, whose sum is σ = 399025889280. Its totient is φ = 26405533440.

The previous prime is 121101116821. The next prime is 121101116863. The reversal of 121101116850 is 58611101121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 147145539 + ... + 147146361.

It is an arithmetic number, because the mean of its divisors is an integer number (1039129920).

Almost surely, 2^121101116850 is an apocalyptic number.

121101116850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121101116850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199512944640).

121101116850 is an abundant number, since it is smaller than the sum of its proper divisors (277924772430).

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

121101116850 is a wasteful number, since it uses less digits than its factorization.

121101116850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 27.

Adding to 121101116850 its reverse (58611101121), we get a palindrome (179712217971).

The spelling of 121101116850 in words is "one hundred twenty-one billion, one hundred one million, one hundred sixteen thousand, eight hundred fifty".