121652666 has 8 divisors (see below), whose sum is σ = 185470644. Its totient is φ = 59829120.

The previous prime is 121652627. The next prime is 121652677. The reversal of 121652666 is 666256121.

It can be written as a sum of positive squares in 2 ways, for example, as 79727041 + 41925625 = 8929^2 + 6475^2 .

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

It is a super-2 number, since 2×121652666² = 29598742289815112, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498455 + ... + 498698.

Almost surely, 2^121652666 is an apocalyptic number.

121652666 is a deficient number, since it is larger than the sum of its proper divisors (63817978).

121652666 is an equidigital number, since it uses as much as digits as its factorization.

121652666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997216.

The product of its digits is 25920, while the sum is 35.

The square root of 121652666 is about 11029.6267389246. The cubic root of 121652666 is about 495.4964457870.

The spelling of 121652666 in words is "one hundred twenty-one million, six hundred fifty-two thousand, six hundred sixty-six".