22120020000121 has 4 divisors (see below), whose sum is σ = 22882779310500. Its totient is φ = 21357260689744.

The previous prime is 22120020000103. The next prime is 22120020000167. The reversal of 22120020000121 is 12100002002122.

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 6011637074496 + 16108382925625 = 2451864^2 + 4013525^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120020000121 - 2¹¹ = 22120019998073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120020000181) 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, 381379655146 + ... + 381379655203.

It is an arithmetic number, because the mean of its divisors is an integer number (5720694827625).

Almost surely, 2^{22120020000121} is an apocalyptic number.

It is an amenable number.

22120020000121 is a deficient number, since it is larger than the sum of its proper divisors (762759310379).

22120020000121 is an equidigital number, since it uses as much as digits as its factorization.

22120020000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762759310378.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120020000121 its reverse (12100002002122), we get a palindrome (34220022002243).

The spelling of 22120020000121 in words is "twenty-two trillion, one hundred twenty billion, twenty million, one hundred twenty-one", and thus it is an aban number.