121246666 has 4 divisors (see below), whose sum is σ = 181870002. Its totient is φ = 60623332.

The previous prime is 121246637. The next prime is 121246679. The reversal of 121246666 is 666642121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666642121 = 59 ⋅11299019.

It can be written as a sum of positive squares in only one way, i.e., 116748025 + 4498641 = 10805^2 + 2121^2 .

It is a super-2 number, since 2×121246666² = 29401508032231112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30311665 + ... + 30311668.

Almost surely, 2^121246666 is an apocalyptic number.

121246666 is a deficient number, since it is larger than the sum of its proper divisors (60623336).

121246666 is an equidigital number, since it uses as much as digits as its factorization.

121246666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60623335.

The product of its digits is 20736, while the sum is 34.

The square root of 121246666 is about 11011.2063825904. The cubic root of 121246666 is about 494.9446130594.

Adding to 121246666 its reverse (666642121), we get a palindrome (787888787).

The spelling of 121246666 in words is "one hundred twenty-one million, two hundred forty-six thousand, six hundred sixty-six".