121001001203 has 8 divisors (see below), whose sum is σ = 122142339072. Its totient is φ = 119862610056.

The previous prime is 121001001169. The next prime is 121001001211. The reversal of 121001001203 is 302100100121.

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 121001001203 - 2²² = 120996806899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001001263) 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 7 ways as a sum of consecutive naturals, for example, 654125 + ... + 818462.

It is an arithmetic number, because the mean of its divisors is an integer number (15267792384).

Almost surely, 2^121001001203 is an apocalyptic number.

121001001203 is a deficient number, since it is larger than the sum of its proper divisors (1141337869).

121001001203 is a wasteful number, since it uses less digits than its factorization.

121001001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473361.

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

Adding to 121001001203 its reverse (302100100121), we get a palindrome (423101101324).

The spelling of 121001001203 in words is "one hundred twenty-one billion, one million, one thousand, two hundred three".