221221403111140 has 48 divisors (see below), whose sum is σ = 491962381747200. Its totient is φ = 83271485445632.

The previous prime is 221221403111113. The next prime is 221221403111143. The reversal of 221221403111140 is 41111304122122.

221221403111140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221221403111143) 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, 43962820 + ... + 48735739.

It is an arithmetic number, because the mean of its divisors is an integer number (10249216286400).

Almost surely, 2^{221221403111140} is an apocalyptic number.

221221403111140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221221403111140 is an abundant number, since it is smaller than the sum of its proper divisors (270740978636060).

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

221221403111140 is a wasteful number, since it uses less digits than its factorization.

221221403111140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92705604 (or 92705602 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 221221403111140 its reverse (41111304122122), we get a palindrome (262332707233262).

The spelling of 221221403111140 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, four hundred three million, one hundred eleven thousand, one hundred forty".