121771187230 has 48 divisors (see below), whose sum is σ = 278153418096. Its totient is φ = 37954654080.

The previous prime is 121771187191. The next prime is 121771187233. The reversal of 121771187230 is 32781177121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121771187233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11290639 + ... + 11301418.

It is an arithmetic number, because the mean of its divisors is an integer number (5794862877).

Almost surely, 2^121771187230 is an apocalyptic number.

121771187230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121771187230 is an abundant number, since it is smaller than the sum of its proper divisors (156382230866).

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

121771187230 is a wasteful number, since it uses less digits than its factorization.

121771187230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22592089 (or 22592082 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 40.

The spelling of 121771187230 in words is "one hundred twenty-one billion, seven hundred seventy-one million, one hundred eighty-seven thousand, two hundred thirty".