120101000121 has 24 divisors (see below), whose sum is σ = 183708686304. Its totient is φ = 75347314560.

The previous prime is 120101000119. The next prime is 120101000143. The reversal of 120101000121 is 121000101021.

It is a happy number.

It is not a de Polignac number, because 120101000121 - 2¹ = 120101000119 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (120101000101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1176690 + ... + 1274676.

It is an arithmetic number, because the mean of its divisors is an integer number (7654528596).

Almost surely, 2^120101000121 is an apocalyptic number.

It is an amenable number.

120101000121 is a deficient number, since it is larger than the sum of its proper divisors (63607686183).

120101000121 is a wasteful number, since it uses less digits than its factorization.

120101000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106021 (or 106018 counting only the distinct ones).

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

Adding to 120101000121 its reverse (121000101021), we get a palindrome (241101101142).

The spelling of 120101000121 in words is "one hundred twenty billion, one hundred one million, one hundred twenty-one", and thus it is an aban number.