121186845 has 48 divisors (see below), whose sum is σ = 238143360. Its totient is φ = 56515968.

The previous prime is 121186841. The next prime is 121186859. The reversal of 121186845 is 548681121.

It is not a de Polignac number, because 121186845 - 2² = 121186841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121186841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5664 + ... + 16566.

It is an arithmetic number, because the mean of its divisors is an integer number (4961320).

Almost surely, 2^121186845 is an apocalyptic number.

121186845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121186845 is a deficient number, since it is larger than the sum of its proper divisors (116956515).

121186845 is a wasteful number, since it uses less digits than its factorization.

121186845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10946 (or 10943 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 121186845 is about 11008.4896784255. The cubic root of 121186845 is about 494.8632006423.

It can be divided in two parts, 121 and 186845, that added together give a triangular number (186966 = T₆₁₁).

The spelling of 121186845 in words is "one hundred twenty-one million, one hundred eighty-six thousand, eight hundred forty-five".