221111120022120 has 128 divisors (see below), whose sum is σ = 744334463808000. Its totient is φ = 58379173574400.

The previous prime is 221111120022103. The next prime is 221111120022157. The reversal of 221111120022120 is 21220021111122.

221111120022120 is a `hidden beast` number, since 2 + 211 + 1 + 11 + 200 + 221 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221111120022093 and 221111120022102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1013418240 + ... + 1013636399.

It is an arithmetic number, because the mean of its divisors is an integer number (5815112998500).

Almost surely, 2^{221111120022120} is an apocalyptic number.

221111120022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221111120022120 is an abundant number, since it is smaller than the sum of its proper divisors (523223343785880).

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

221111120022120 is a wasteful number, since it uses less digits than its factorization.

221111120022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027054760 (or 2027054750 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 221111120022120 its reverse (21220021111122), we get a palindrome (242331141133242).

The spelling of 221111120022120 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred twenty million, twenty-two thousand, one hundred twenty".