121606115750 has 32 divisors (see below), whose sum is σ = 260167602240. Its totient is φ = 41693524800.

The previous prime is 121606115731. The next prime is 121606115797. The reversal of 121606115750 is 57511606121.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 121606115750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34742855 + ... + 34746354.

It is an arithmetic number, because the mean of its divisors is an integer number (8130237570).

Almost surely, 2^121606115750 is an apocalyptic number.

121606115750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121606115750 is an abundant number, since it is smaller than the sum of its proper divisors (138561486490).

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

121606115750 is an equidigital number, since it uses as much as digits as its factorization.

121606115750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69489233 (or 69489223 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 121606115750 in words is "one hundred twenty-one billion, six hundred six million, one hundred fifteen thousand, seven hundred fifty".