121320711 has 12 divisors (see below), whose sum is σ = 175382688. Its totient is φ = 80815104.

The previous prime is 121320709. The next prime is 121320733. The reversal of 121320711 is 117023121.

It is a happy number.

It is not a de Polignac number, because 121320711 - 2¹ = 121320709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8071 + ... + 17543.

It is an arithmetic number, because the mean of its divisors is an integer number (14615224).

Almost surely, 2^121320711 is an apocalyptic number.

121320711 is a deficient number, since it is larger than the sum of its proper divisors (54061977).

121320711 is a wasteful number, since it uses less digits than its factorization.

121320711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902 (or 10899 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 121320711 is about 11014.5681258958. The cubic root of 121320711 is about 495.0453463202.

Adding to 121320711 its reverse (117023121), we get a palindrome (238343832).

The spelling of 121320711 in words is "one hundred twenty-one million, three hundred twenty thousand, seven hundred eleven".