121201103099 has 4 divisors (see below), whose sum is σ = 121203428136. Its totient is φ = 121198778064.

The previous prime is 121201103087. The next prime is 121201103137. The reversal of 121201103099 is 990301102121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990301102121 = 103 ⋅9614573807.

It is a cyclic number.

It is not a de Polignac number, because 121201103099 - 2¹² = 121201099003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201133099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082489 + ... + 1189194.

It is an arithmetic number, because the mean of its divisors is an integer number (30300857034).

Almost surely, 2^121201103099 is an apocalyptic number.

121201103099 is a deficient number, since it is larger than the sum of its proper divisors (2325037).

121201103099 is an equidigital number, since it uses as much as digits as its factorization.

121201103099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325036.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 121201103099 in words is "one hundred twenty-one billion, two hundred one million, one hundred three thousand, ninety-nine".