221323020203 has 2 divisors, whose sum is σ = 221323020204. Its totient is φ = 221323020202.

The previous prime is 221323020197. The next prime is 221323020239. The reversal of 221323020203 is 302020323122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221323020203 - 2²⁰ = 221321971627 is a prime.

It is a super-2 number, since 2×221323020203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221323020263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661510101 + 110661510102.

It is an arithmetic number, because the mean of its divisors is an integer number (110661510102).

Almost surely, 2^221323020203 is an apocalyptic number.

221323020203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221323020203 is an equidigital number, since it uses as much as digits as its factorization.

221323020203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 221323020203 its reverse (302020323122), we get a palindrome (523343343325).

The spelling of 221323020203 in words is "two hundred twenty-one billion, three hundred twenty-three million, twenty thousand, two hundred three".