120123220221111 has 4 divisors (see below), whose sum is σ = 160164293628152. Its totient is φ = 80082146814072.

The previous prime is 120123220221077. The next prime is 120123220221163. The reversal of 120123220221111 is 111122022321021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120123220221111 - 2⁹ = 120123220220599 is a prime.

It is a super-4 number, since 4×120123220221111⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120123220241111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20020536703516 + ... + 20020536703521.

It is an arithmetic number, because the mean of its divisors is an integer number (40041073407038).

Almost surely, 2^{120123220221111} is an apocalyptic number.

120123220221111 is a deficient number, since it is larger than the sum of its proper divisors (40041073407041).

120123220221111 is an equidigital number, since it uses as much as digits as its factorization.

120123220221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40041073407040.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 120123220221111 its reverse (111122022321021), we get a palindrome (231245242542132).

The spelling of 120123220221111 in words is "one hundred twenty trillion, one hundred twenty-three billion, two hundred twenty million, two hundred twenty-one thousand, one hundred eleven".