20022022000121 has 4 divisors (see below), whose sum is σ = 20563157729892. Its totient is φ = 19480886270352.

The previous prime is 20022022000109. The next prime is 20022022000129. The reversal of 20022022000121 is 12100022022002.

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 17293446614521 + 2728575385600 = 4158539^2 + 1651840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022022000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022022000096 and 20022022000105.

It is not an unprimeable number, because it can be changed into a prime (20022022000129) 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, 270567864830 + ... + 270567864903.

It is an arithmetic number, because the mean of its divisors is an integer number (5140789432473).

Almost surely, 2^{20022022000121} is an apocalyptic number.

It is an amenable number.

20022022000121 is a deficient number, since it is larger than the sum of its proper divisors (541135729771).

20022022000121 is an equidigital number, since it uses as much as digits as its factorization.

20022022000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541135729770.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20022022000121 its reverse (12100022022002), we get a palindrome (32122044022123).

The spelling of 20022022000121 in words is "twenty trillion, twenty-two billion, twenty-two million, one hundred twenty-one", and thus it is an aban number.