221020212011110 has 32 divisors (see below), whose sum is σ = 421247760645600. Its totient is φ = 83205784253952.

The previous prime is 221020212011089. The next prime is 221020212011119. The reversal of 221020212011110 is 11110212020122.

It is a super-2 number, since 2×221020212011110² (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 (221020212011119) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6471385 + ... + 21998164.

It is an arithmetic number, because the mean of its divisors is an integer number (13163992520175).

Almost surely, 2^{221020212011110} is an apocalyptic number.

221020212011110 is a deficient number, since it is larger than the sum of its proper divisors (200227548634490).

221020212011110 is a wasteful number, since it uses less digits than its factorization.

221020212011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515240.

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

Adding to 221020212011110 its reverse (11110212020122), we get a palindrome (232130424031232).

The spelling of 221020212011110 in words is "two hundred twenty-one trillion, twenty billion, two hundred twelve million, eleven thousand, one hundred ten".