221001201122120 has 32 divisors (see below), whose sum is σ = 497253264984000. Its totient is φ = 88400380456128.

The previous prime is 221001201122113. The next prime is 221001201122209. The reversal of 221001201122120 is 21221102100122.

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, 40042031 + ... + 45225729.

It is an arithmetic number, because the mean of its divisors is an integer number (15539164530750).

Almost surely, 2^{221001201122120} is an apocalyptic number.

221001201122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221001201122120 is an abundant number, since it is smaller than the sum of its proper divisors (276252063861880).

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

221001201122120 is a wasteful number, since it uses less digits than its factorization.

221001201122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249557 (or 6249553 counting only the distinct ones).

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

Adding to 221001201122120 its reverse (21221102100122), we get a palindrome (242222303222242).

The spelling of 221001201122120 in words is "two hundred twenty-one trillion, one billion, two hundred one million, one hundred twenty-two thousand, one hundred twenty".