221011133332 has 18 divisors (see below), whose sum is σ = 425126788394. Its totient is φ = 100459605840.

The previous prime is 221011133293. The next prime is 221011133339. The reversal of 221011133332 is 233331110122.

It can be written as a sum of positive squares in only one way, i.e., 150230659216 + 70780474116 = 387596^2 + 266046^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011133339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228316803 + ... + 228317770.

Almost surely, 2^221011133332 is an apocalyptic number.

221011133332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221011133332 is a deficient number, since it is larger than the sum of its proper divisors (204115655062).

221011133332 is a wasteful number, since it uses less digits than its factorization.

221011133332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456634599 (or 456634586 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 221011133332 its reverse (233331110122), we get a palindrome (454342243454).

The spelling of 221011133332 in words is "two hundred twenty-one billion, eleven million, one hundred thirty-three thousand, three hundred thirty-two".