221211020111118 has 16 divisors (see below), whose sum is σ = 446480958023760. Its totient is φ = 73060520403456.

The previous prime is 221211020111117. The next prime is 221211020111149. The reversal of 221211020111118 is 811111020112122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211020111117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169121574355 + ... + 169121575662.

It is an arithmetic number, because the mean of its divisors is an integer number (27905059876485).

Almost surely, 2^{221211020111118} is an apocalyptic number.

221211020111118 is an abundant number, since it is smaller than the sum of its proper divisors (225269937912642).

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

221211020111118 is a wasteful number, since it uses less digits than its factorization.

221211020111118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338243150131.

The product of its (nonzero) digits is 128, while the sum is 24.

The spelling of 221211020111118 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty million, one hundred eleven thousand, one hundred eighteen".