221012031203 has 4 divisors (see below), whose sum is σ = 221792992728. Its totient is φ = 220231069680.

The previous prime is 221012031157. The next prime is 221012031209. The reversal of 221012031203 is 302130210122.

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

It is a cyclic number.

It is not a de Polignac number, because 221012031203 - 2²⁰ = 221010982627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012031209) 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, 390480338 + ... + 390480903.

It is an arithmetic number, because the mean of its divisors is an integer number (55448248182).

Almost surely, 2^221012031203 is an apocalyptic number.

221012031203 is a deficient number, since it is larger than the sum of its proper divisors (780961525).

221012031203 is an equidigital number, since it uses as much as digits as its factorization.

221012031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780961524.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221012031203 its reverse (302130210122), we get a palindrome (523142241325).

The spelling of 221012031203 in words is "two hundred twenty-one billion, twelve million, thirty-one thousand, two hundred three".