221321322213010 has 64 divisors (see below), whose sum is σ = 425281842720000. Its totient is φ = 82682062848000.

The previous prime is 221321322212981. The next prime is 221321322213011. The reversal of 221321322213010 is 10312223123122.

It is a super-2 number, since 2×221321322213010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221321322213011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193699866 + ... + 194839114.

It is an arithmetic number, because the mean of its divisors is an integer number (6645028792500).

Almost surely, 2^{221321322213010} is an apocalyptic number.

221321322213010 is a deficient number, since it is larger than the sum of its proper divisors (203960520506990).

221321322213010 is a wasteful number, since it uses less digits than its factorization.

221321322213010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153747.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 221321322213010 its reverse (10312223123122), we get a palindrome (231633545336132).

The spelling of 221321322213010 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, three hundred twenty-two million, two hundred thirteen thousand, ten".