221120011201220 has 24 divisors (see below), whose sum is σ = 488791603708800. Its totient is φ = 83792846349792.

The previous prime is 221120011201217. The next prime is 221120011201303. The reversal of 221120011201220 is 22102110021122.

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, 290947382780 + ... + 290947383539.

It is an arithmetic number, because the mean of its divisors is an integer number (20366316821200).

Almost surely, 2^{221120011201220} is an apocalyptic number.

221120011201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120011201220 is an abundant number, since it is smaller than the sum of its proper divisors (267671592507580).

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

221120011201220 is a wasteful number, since it uses less digits than its factorization.

221120011201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581894766347 (or 581894766345 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221120011201220 its reverse (22102110021122), we get a palindrome (243222121222342).

The spelling of 221120011201220 in words is "two hundred twenty-one trillion, one hundred twenty billion, eleven million, two hundred one thousand, two hundred twenty".