221121101120 has 56 divisors (see below), whose sum is σ = 533209804800. Its totient is φ = 87328829952.

The previous prime is 221121101119. The next prime is 221121101189. The reversal of 221121101120 is 21101121122.

It is a junction number, because it is equal to n+sod(n) for n = 221121101095 and 221121101104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4348160 + ... + 4398719.

Almost surely, 2^221121101120 is an apocalyptic number.

221121101120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221121101120 is an abundant number, since it is smaller than the sum of its proper divisors (312088703680).

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

221121101120 is an equidigital number, since it uses as much as digits as its factorization.

221121101120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746975 (or 8746965 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221121101120 its reverse (21101121122), we get a palindrome (242222222242).

The spelling of 221121101120 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred one thousand, one hundred twenty".