221111111201120 has 48 divisors (see below), whose sum is σ = 597000000246048. Its totient is φ = 75809523840000.

The previous prime is 221111111200979. The next prime is 221111111201159. The reversal of 221111111201120 is 21102111111122.

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, 98710316381 + ... + 98710318620.

It is an arithmetic number, because the mean of its divisors is an integer number (12437500005126).

Almost surely, 2^{221111111201120} is an apocalyptic number.

221111111201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221111111201120 is an abundant number, since it is smaller than the sum of its proper divisors (375888889044928).

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

221111111201120 is a wasteful number, since it uses less digits than its factorization.

221111111201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197420635023 (or 197420635015 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221111111201120 its reverse (21102111111122), we get a palindrome (242213222312242).

The spelling of 221111111201120 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, two hundred one thousand, one hundred twenty".