221100112219976 has 256 divisors, whose sum is σ = 476033531904000. Its totient is φ = 95365429125120.

The previous prime is 221100112219949. The next prime is 221100112220011. The reversal of 221100112219976 is 679912211001122.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65823193385 + ... + 65823196743.

It is an arithmetic number, because the mean of its divisors is an integer number (1859505984000).

Almost surely, 2^{221100112219976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221100112219976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238016765952000).

221100112219976 is an abundant number, since it is smaller than the sum of its proper divisors (254933419684024).

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

221100112219976 is a wasteful number, since it uses less digits than its factorization.

221100112219976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852 (or 4848 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 221100112219976 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twelve million, two hundred nineteen thousand, nine hundred seventy-six".