120101121 has 36 divisors (see below), whose sum is σ = 202804992. Its totient is φ = 67091184.

The previous prime is 120101119. The next prime is 120101153. The reversal of 120101121 is 121101021.

It is a happy number.

It is not a de Polignac number, because 120101121 - 2¹ = 120101119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120101321) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 138736 + ... + 139598.

It is an arithmetic number, because the mean of its divisors is an integer number (5633472).

Almost surely, 2^120101121 is an apocalyptic number.

It is an amenable number.

120101121 is a deficient number, since it is larger than the sum of its proper divisors (82703871).

120101121 is an equidigital number, since it uses as much as digits as its factorization.

120101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 120101121 is about 10959.0656992282. The cubic root of 120101121 is about 493.3809236514.

Adding to 120101121 its reverse (121101021), we get a palindrome (241202142).

It can be divided in two parts, 12010 and 1121, that added together give a palindrome (13131).

The spelling of 120101121 in words is "one hundred twenty million, one hundred one thousand, one hundred twenty-one".