221422047265770 has 32 divisors (see below), whose sum is σ = 572290829857152. Its totient is φ = 54503888557632.

The previous prime is 221422047265717. The next prime is 221422047265787. The reversal of 221422047265770 is 77562740224122.

221422047265770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 283874419182 + ... + 283874419961.

It is an arithmetic number, because the mean of its divisors is an integer number (17884088433036).

Almost surely, 2^{221422047265770} is an apocalyptic number.

221422047265770 is an abundant number, since it is smaller than the sum of its proper divisors (350868782591382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221422047265770 is a wasteful number, since it uses less digits than its factorization.

221422047265770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567748839166.

The product of its (nonzero) digits is 5268480, while the sum is 51.

Adding to 221422047265770 its reverse (77562740224122), we get a palindrome (298984787489892).

The spelling of 221422047265770 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, forty-seven million, two hundred sixty-five thousand, seven hundred seventy".