121201200000203 has 4 divisors (see below), whose sum is σ = 122333921495640. Its totient is φ = 120068478504768.

The previous prime is 121201200000191. The next prime is 121201200000247. The reversal of 121201200000203 is 302000002102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201200000203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121201200003203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566360747558 + ... + 566360747771.

It is an arithmetic number, because the mean of its divisors is an integer number (30583480373910).

Almost surely, 2^{121201200000203} is an apocalyptic number.

121201200000203 is a deficient number, since it is larger than the sum of its proper divisors (1132721495437).

121201200000203 is a wasteful number, since it uses less digits than its factorization.

121201200000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132721495436.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121201200000203 its reverse (302000002102121), we get a palindrome (423201202102324).

The spelling of 121201200000203 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred million, two hundred three", and thus it is an aban number.