121121366 has 4 divisors (see below), whose sum is σ = 181682052. Its totient is φ = 60560682.

The previous prime is 121121359. The next prime is 121121383. The reversal of 121121366 is 663121121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 663121121 = 13 ⋅51009317.

It is a congruent 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 as a sum of consecutive naturals, namely, 30280340 + ... + 30280343.

It is an arithmetic number, because the mean of its divisors is an integer number (45420513).

Almost surely, 2^121121366 is an apocalyptic number.

121121366 is a deficient number, since it is larger than the sum of its proper divisors (60560686).

121121366 is an equidigital number, since it uses as much as digits as its factorization.

121121366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60560685.

The product of its digits is 432, while the sum is 23.

The square root of 121121366 is about 11005.5152537262. The cubic root of 121121366 is about 494.7740573440.

Adding to 121121366 its reverse (663121121), we get a palindrome (784242487).

The spelling of 121121366 in words is "one hundred twenty-one million, one hundred twenty-one thousand, three hundred sixty-six".