221033111343232 has 16 divisors (see below), whose sum is σ = 440339401504350. Its totient is φ = 110516555671552.

The previous prime is 221033111343229. The next prime is 221033111343271. The reversal of 221033111343232 is 232343111330122.

It can be written as a sum of positive squares in only one way, i.e., 178989506660416 + 42043604682816 = 13378696^2 + 6484104^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 221033111343194 and 221033111343203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863410591057 + ... + 863410591312.

Almost surely, 2^{221033111343232} is an apocalyptic number.

It is an amenable number.

221033111343232 is a deficient number, since it is larger than the sum of its proper divisors (219306290161118).

221033111343232 is an equidigital number, since it uses as much as digits as its factorization.

221033111343232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726821182383 (or 1726821182371 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 221033111343232 its reverse (232343111330122), we get a palindrome (453376222673354).

The spelling of 221033111343232 in words is "two hundred twenty-one trillion, thirty-three billion, one hundred eleven million, three hundred forty-three thousand, two hundred thirty-two".