120201111121 has 16 divisors (see below), whose sum is σ = 147948159744. Its totient is φ = 95098820544.

The previous prime is 120201111119. The next prime is 120201111127. The reversal of 120201111121 is 121111102021.

It is a happy number.

It is not a de Polignac number, because 120201111121 - 2¹ = 120201111119 is a prime.

It is a super-2 number, since 2×120201111121² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (120201111127) 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, 2644035 + ... + 2689111.

It is an arithmetic number, because the mean of its divisors is an integer number (9246759984).

Almost surely, 2^120201111121 is an apocalyptic number.

It is an amenable number.

120201111121 is a deficient number, since it is larger than the sum of its proper divisors (27747048623).

120201111121 is a wasteful number, since it uses less digits than its factorization.

120201111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74400.

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

Adding to 120201111121 its reverse (121111102021), we get a palindrome (241312213142).

The spelling of 120201111121 in words is "one hundred twenty billion, two hundred one million, one hundred eleven thousand, one hundred twenty-one".