221255153203 has 4 divisors (see below), whose sum is σ = 252863032240. Its totient is φ = 189647274168.

The previous prime is 221255153183. The next prime is 221255153209. The reversal of 221255153203 is 302351552122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302351552122 = 2 ⋅151175776061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221255153203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221255153209) 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, 15803939508 + ... + 15803939521.

It is an arithmetic number, because the mean of its divisors is an integer number (63215758060).

Almost surely, 2^221255153203 is an apocalyptic number.

221255153203 is a deficient number, since it is larger than the sum of its proper divisors (31607879037).

221255153203 is an equidigital number, since it uses as much as digits as its factorization.

221255153203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31607879036.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 221255153203 in words is "two hundred twenty-one billion, two hundred fifty-five million, one hundred fifty-three thousand, two hundred three".