21121022004203 has 8 divisors (see below), whose sum is σ = 23041203001920. Its totient is φ = 19200855687880.

The previous prime is 21121022004193. The next prime is 21121022004209. The reversal of 21121022004203 is 30240022012112.

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 21121022004203 - 2⁸ = 21121022003947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21121022004209) 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, 546725 + ... + 6522342.

It is an arithmetic number, because the mean of its divisors is an integer number (2880150375240).

Almost surely, 2^{21121022004203} is an apocalyptic number.

21121022004203 is a deficient number, since it is larger than the sum of its proper divisors (1920180997717).

21121022004203 is a wasteful number, since it uses less digits than its factorization.

21121022004203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340697.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21121022004203 its reverse (30240022012112), we get a palindrome (51361044016315).

The spelling of 21121022004203 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, four thousand, two hundred three".