221211020111116 has 24 divisors (see below), whose sum is σ = 449674860557216. Its totient is φ = 93250547118720.

The previous prime is 221211020111069. The next prime is 221211020111117. The reversal of 221211020111116 is 611111020112122.

It is not an unprimeable number, because it can be changed into a prime (221211020111117) 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 7 ways as a sum of consecutive naturals, for example, 64757322681 + ... + 64757326096.

Almost surely, 2^{221211020111116} is an apocalyptic number.

It is an amenable number.

221211020111116 is an abundant number, since it is smaller than the sum of its proper divisors (228463840446100).

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

221211020111116 is a wasteful number, since it uses less digits than its factorization.

221211020111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129514648849 (or 129514648847 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 221211020111116 its reverse (611111020112122), we get a palindrome (832322040223238).

The spelling of 221211020111116 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty million, one hundred eleven thousand, one hundred sixteen".