120001221111 has 8 divisors (see below), whose sum is σ = 160208619120. Its totient is φ = 79897318592.

The previous prime is 120001221077. The next prime is 120001221157. The reversal of 120001221111 is 111122100021.

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 120001221111 - 2⁶ = 120001221047 is a prime.

It is a super-2 number, since 2×120001221111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001221181) 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, 25871166 + ... + 25875803.

It is an arithmetic number, because the mean of its divisors is an integer number (20026077390).

Almost surely, 2^120001221111 is an apocalyptic number.

120001221111 is a deficient number, since it is larger than the sum of its proper divisors (40207398009).

120001221111 is an equidigital number, since it uses as much as digits as its factorization.

120001221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51747745.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120001221111 its reverse (111122100021), we get a palindrome (231123321132).

The spelling of 120001221111 in words is "one hundred twenty billion, one million, two hundred twenty-one thousand, one hundred eleven".