121151800587 has 4 divisors (see below), whose sum is σ = 161535734120. Its totient is φ = 80767867056.

The previous prime is 121151800541. The next prime is 121151800589. The reversal of 121151800587 is 785008151121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121151800587 - 2⁸ = 121151800331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121151800589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20191966762 + ... + 20191966767.

It is an arithmetic number, because the mean of its divisors is an integer number (40383933530).

Almost surely, 2^121151800587 is an apocalyptic number.

121151800587 is a deficient number, since it is larger than the sum of its proper divisors (40383933533).

121151800587 is an equidigital number, since it uses as much as digits as its factorization.

121151800587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40383933532.

The product of its (nonzero) digits is 22400, while the sum is 39.

The spelling of 121151800587 in words is "one hundred twenty-one billion, one hundred fifty-one million, eight hundred thousand, five hundred eighty-seven".