121508228730 has 48 divisors (see below), whose sum is σ = 339231140640. Its totient is φ = 27773309088.

The previous prime is 121508228719. The next prime is 121508228731. The reversal of 121508228730 is 37822805121.

It is not an unprimeable number, because it can be changed into a prime (121508228731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41327860 + ... + 41330799.

It is an arithmetic number, because the mean of its divisors is an integer number (7067315430).

Almost surely, 2^121508228730 is an apocalyptic number.

121508228730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121508228730 is an abundant number, since it is smaller than the sum of its proper divisors (217722911910).

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

121508228730 is a wasteful number, since it uses less digits than its factorization.

121508228730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82658683 (or 82658676 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 121508228730 in words is "one hundred twenty-one billion, five hundred eight million, two hundred twenty-eight thousand, seven hundred thirty".