221002011120 has 80 divisors (see below), whose sum is σ = 747388628352. Its totient is φ = 53576244480.

The previous prime is 221002011077. The next prime is 221002011121. The reversal of 221002011120 is 21110200122.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 221002011096 and 221002011105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002011121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41853802 + ... + 41859081.

Almost surely, 2^221002011120 is an apocalyptic number.

221002011120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002011120 is an abundant number, since it is smaller than the sum of its proper divisors (526386617232).

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

221002011120 is a wasteful number, since it uses less digits than its factorization.

221002011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83712910 (or 83712904 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221002011120 its reverse (21110200122), we get a palindrome (242112211242).

The spelling of 221002011120 in words is "two hundred twenty-one billion, two million, eleven thousand, one hundred twenty".