221332233091 has 8 divisors (see below), whose sum is σ = 234382143024. Its totient is φ = 208285697280.

The previous prime is 221332233053. The next prime is 221332233131. The reversal of 221332233091 is 190332233122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221332233091 - 2¹⁹ = 221331708803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221332233691) 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, 707845 + ... + 971446.

It is an arithmetic number, because the mean of its divisors is an integer number (29297767878).

Almost surely, 2^221332233091 is an apocalyptic number.

221332233091 is a deficient number, since it is larger than the sum of its proper divisors (13049909933).

221332233091 is a wasteful number, since it uses less digits than its factorization.

221332233091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687061.

The product of its (nonzero) digits is 11664, while the sum is 31.

Adding to 221332233091 its sum of digits (31), we get a palindrome (221332233122).

The spelling of 221332233091 in words is "two hundred twenty-one billion, three hundred thirty-two million, two hundred thirty-three thousand, ninety-one".