221320344021310 has 32 divisors (see below), whose sum is σ = 398802407796000. Its totient is φ = 88433538994560.

The previous prime is 221320344021251. The next prime is 221320344021367. The reversal of 221320344021310 is 13120443023122.

It is a super-2 number, since 2×221320344021310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83026801 + ... + 85650979.

It is an arithmetic number, because the mean of its divisors is an integer number (12462575243625).

Almost surely, 2^{221320344021310} is an apocalyptic number.

221320344021310 is a deficient number, since it is larger than the sum of its proper divisors (177482063774690).

221320344021310 is a wasteful number, since it uses less digits than its factorization.

221320344021310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633196.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221320344021310 its reverse (13120443023122), we get a palindrome (234440787044432).

The spelling of 221320344021310 in words is "two hundred twenty-one trillion, three hundred twenty billion, three hundred forty-four million, twenty-one thousand, three hundred ten".