221222525345 has 8 divisors (see below), whose sum is σ = 274030483200. Its totient is φ = 171269051760.

The previous prime is 221222525339. The next prime is 221222525353. The reversal of 221222525345 is 543525222122.

221222525345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221222525345 - 2⁶ = 221222525281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713620895 + ... + 713621204.

It is an arithmetic number, because the mean of its divisors is an integer number (34253810400).

Almost surely, 2^221222525345 is an apocalyptic number.

It is an amenable number.

221222525345 is a deficient number, since it is larger than the sum of its proper divisors (52807957855).

221222525345 is a wasteful number, since it uses less digits than its factorization.

221222525345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427242135.

The product of its digits is 96000, while the sum is 35.

Adding to 221222525345 its reverse (543525222122), we get a palindrome (764747747467).

The spelling of 221222525345 in words is "two hundred twenty-one billion, two hundred twenty-two million, five hundred twenty-five thousand, three hundred forty-five".