121018688630 has 64 divisors (see below), whose sum is σ = 264016392192. Its totient is φ = 38989278720.

The previous prime is 121018688627. The next prime is 121018688639. The reversal of 121018688630 is 36886810121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121018688639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670307 + ... + 831473.

It is an arithmetic number, because the mean of its divisors is an integer number (4125256128).

Almost surely, 2^121018688630 is an apocalyptic number.

121018688630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121018688630 is an abundant number, since it is smaller than the sum of its proper divisors (142997703562).

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

121018688630 is a wasteful number, since it uses less digits than its factorization.

121018688630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161829.

The product of its (nonzero) digits is 110592, while the sum is 44.

The spelling of 121018688630 in words is "one hundred twenty-one billion, eighteen million, six hundred eighty-eight thousand, six hundred thirty".