121661852 has 12 divisors (see below), whose sum is σ = 229285896. Its totient is φ = 56151600.

The previous prime is 121661833. The next prime is 121661857. The reversal of 121661852 is 258166121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121661857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169774 + ... + 1169877.

It is an arithmetic number, because the mean of its divisors is an integer number (19107158).

Almost surely, 2^121661852 is an apocalyptic number.

It is an amenable number.

121661852 is a deficient number, since it is larger than the sum of its proper divisors (107624044).

121661852 is a wasteful number, since it uses less digits than its factorization.

121661852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339668 (or 2339666 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 121661852 is about 11030.0431549473. The cubic root of 121661852 is about 495.5089171284.

The spelling of 121661852 in words is "one hundred twenty-one million, six hundred sixty-one thousand, eight hundred fifty-two".