121201001101999 has 8 divisors (see below), whose sum is σ = 149170462894880. Its totient is φ = 95895297575136.

The previous prime is 121201001101931. The next prime is 121201001102029. The reversal of 121201001101999 is 999101100102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121201001101999 - 2²⁹ = 121200464231087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201001102999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665939566404 + ... + 665939566585.

It is an arithmetic number, because the mean of its divisors is an integer number (18646307861860).

Almost surely, 2^{121201001101999} is an apocalyptic number.

121201001101999 is a deficient number, since it is larger than the sum of its proper divisors (27969461792881).

121201001101999 is a wasteful number, since it uses less digits than its factorization.

121201001101999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331879133009.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 121201001101999 in words is "one hundred twenty-one trillion, two hundred one billion, one million, one hundred one thousand, nine hundred ninety-nine".