121140666 has 12 divisors (see below), whose sum is σ = 262471482. Its totient is φ = 40380216.

The previous prime is 121140641. The next prime is 121140683. The reversal of 121140666 is 666041121.

It can be written as a sum of positive squares in only one way, i.e., 100701225 + 20439441 = 10035^2 + 4521^2 .

It is a super-3 number, since 3×121140666³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3365001 + ... + 3365036.

Almost surely, 2^121140666 is an apocalyptic number.

121140666 is an abundant number, since it is smaller than the sum of its proper divisors (141330816).

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

121140666 is a wasteful number, since it uses less digits than its factorization.

121140666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730045 (or 6730042 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 121140666 is about 11006.3920518942. The cubic root of 121140666 is about 494.8003357579.

Adding to 121140666 its reverse (666041121), we get a palindrome (787181787).

The spelling of 121140666 in words is "one hundred twenty-one million, one hundred forty thousand, six hundred sixty-six".