120111201222121 has 4 divisors (see below), whose sum is σ = 120112277088132. Its totient is φ = 120110125356112.

The previous prime is 120111201222113. The next prime is 120111201222161. The reversal of 120111201222121 is 121222102111021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14186040142096 + 105925161080025 = 3766436^2 + 10291995^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111201222121 - 2³ = 120111201222113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120111201222161) 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, 537765526 + ... + 537988831.

It is an arithmetic number, because the mean of its divisors is an integer number (30028069272033).

Almost surely, 2^{120111201222121} is an apocalyptic number.

It is an amenable number.

120111201222121 is a deficient number, since it is larger than the sum of its proper divisors (1075866011).

120111201222121 is a wasteful number, since it uses less digits than its factorization.

120111201222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075866010.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120111201222121 its reverse (121222102111021), we get a palindrome (241333303333142).

The spelling of 120111201222121 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-one".