121320101 has 16 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 99143088.

The previous prime is 121320061. The next prime is 121320103. The reversal of 121320101 is 101023121.

It is a cyclic number.

It is not a de Polignac number, because 121320101 - 2⁶ = 121320037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56750 + ... + 58848.

It is an arithmetic number, because the mean of its divisors is an integer number (9072000).

Almost surely, 2^121320101 is an apocalyptic number.

It is an amenable number.

121320101 is a deficient number, since it is larger than the sum of its proper divisors (23831899).

121320101 is a wasteful number, since it uses less digits than its factorization.

121320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121320101 is about 11014.5404352610. The cubic root of 121320101 is about 495.0445166235.

Adding to 121320101 its reverse (101023121), we get a palindrome (222343222).

The spelling of 121320101 in words is "one hundred twenty-one million, three hundred twenty thousand, one hundred one".