221323102132 has 48 divisors (see below), whose sum is σ = 438106334400. Its totient is φ = 96907829760.

The previous prime is 221323102129. The next prime is 221323102157. The reversal of 221323102132 is 231201323122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352219 + ... + 752797.

It is an arithmetic number, because the mean of its divisors is an integer number (9127215300).

Almost surely, 2^221323102132 is an apocalyptic number.

221323102132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221323102132 is a deficient number, since it is larger than the sum of its proper divisors (216783232268).

221323102132 is a wasteful number, since it uses less digits than its factorization.

221323102132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401056 (or 401054 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221323102132 its reverse (231201323122), we get a palindrome (452524425254).

The spelling of 221323102132 in words is "two hundred twenty-one billion, three hundred twenty-three million, one hundred two thousand, one hundred thirty-two".