120221011111 has 8 divisors (see below), whose sum is σ = 128826485424. Its totient is φ = 111785942400.

The previous prime is 120221011069. The next prime is 120221011139. The reversal of 120221011111 is 111110122021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120221011111 - 2¹¹ = 120221009063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221011091 and 120221011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221011171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42599940 + ... + 42602761.

It is an arithmetic number, because the mean of its divisors is an integer number (16103310678).

Almost surely, 2^120221011111 is an apocalyptic number.

120221011111 is a deficient number, since it is larger than the sum of its proper divisors (8605474313).

120221011111 is an equidigital number, since it uses as much as digits as its factorization.

120221011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85202801.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120221011111 its reverse (111110122021), we get a palindrome (231331133132).

The spelling of 120221011111 in words is "one hundred twenty billion, two hundred twenty-one million, eleven thousand, one hundred eleven".