121985058858 has 48 divisors (see below), whose sum is σ = 270624182976. Its totient is φ = 36618391680.

The previous prime is 121985058857. The next prime is 121985058893. The reversal of 121985058858 is 858850589121.

It is not an unprimeable number, because it can be changed into a prime (121985058857) 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, 1425510 + ... + 1508657.

It is an arithmetic number, because the mean of its divisors is an integer number (5638003812).

Almost surely, 2^121985058858 is an apocalyptic number.

121985058858 is an abundant number, since it is smaller than the sum of its proper divisors (148639124118).

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

121985058858 is a wasteful number, since it uses less digits than its factorization.

121985058858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934239 (or 2934226 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 60.

The spelling of 121985058858 in words is "one hundred twenty-one billion, nine hundred eighty-five million, fifty-eight thousand, eight hundred fifty-eight".