221234121203 has 16 divisors (see below), whose sum is σ = 225678652416. Its totient is φ = 216824398560.

The previous prime is 221234121191. The next prime is 221234121211. The reversal of 221234121203 is 302121432122.

221234121203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221234121203 - 2⁴ = 221234121187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221234124203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33061088 + ... + 33067778.

It is an arithmetic number, because the mean of its divisors is an integer number (14104915776).

Almost surely, 2^221234121203 is an apocalyptic number.

221234121203 is a deficient number, since it is larger than the sum of its proper divisors (4444531213).

221234121203 is a wasteful number, since it uses less digits than its factorization.

221234121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221234121203 its reverse (302121432122), we get a palindrome (523355553325).

The spelling of 221234121203 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred twenty-one thousand, two hundred three".