221020110212110 has 32 divisors (see below), whose sum is σ = 434072600704512. Its totient is φ = 80358083390880.

The previous prime is 221020110212093. The next prime is 221020110212119. The reversal of 221020110212110 is 11212011020122.

It is a super-2 number, since 2×221020110212110² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020110212119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160131922 + ... + 161506261.

It is an arithmetic number, because the mean of its divisors is an integer number (13564768772016).

Almost surely, 2^{221020110212110} is an apocalyptic number.

221020110212110 is a deficient number, since it is larger than the sum of its proper divisors (213052490492402).

221020110212110 is a wasteful number, since it uses less digits than its factorization.

221020110212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321644448.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221020110212110 its reverse (11212011020122), we get a palindrome (232232121232232).

The spelling of 221020110212110 in words is "two hundred twenty-one trillion, twenty billion, one hundred ten million, two hundred twelve thousand, one hundred ten".