2121121133203 has 8 divisors (see below), whose sum is σ = 2124826506000. Its totient is φ = 2117416194048.

The previous prime is 2121121133143. The next prime is 2121121133237. The reversal of 2121121133203 is 3023311211212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121121133203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121121133603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10603968 + ... + 10802146.

It is an arithmetic number, because the mean of its divisors is an integer number (265603313250).

Almost surely, 2^{2121121133203} is an apocalyptic number.

2121121133203 is a deficient number, since it is larger than the sum of its proper divisors (3705372797).

2121121133203 is a wasteful number, since it uses less digits than its factorization.

2121121133203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216821.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2121121133203 its reverse (3023311211212), we get a palindrome (5144432344415).

The spelling of 2121121133203 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, two hundred three".