121669610 has 8 divisors (see below), whose sum is σ = 219005316. Its totient is φ = 48667840.

The previous prime is 121669607. The next prime is 121669621. The reversal of 121669610 is 16966121.

It can be written as a sum of positive squares in 2 ways, for example, as 119661721 + 2007889 = 10939^2 + 1417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6083471 + ... + 6083490.

Almost surely, 2^121669610 is an apocalyptic number.

121669610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121669610 is a deficient number, since it is larger than the sum of its proper divisors (97335706).

121669610 is a wasteful number, since it uses less digits than its factorization.

121669610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12166968.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 121669610 is about 11030.3948252091. The cubic root of 121669610 is about 495.5194492616.

The spelling of 121669610 in words is "one hundred twenty-one million, six hundred sixty-nine thousand, six hundred ten".