22000020010121 has 4 divisors (see below), whose sum is σ = 22005777674244. Its totient is φ = 21994262346000.

The previous prime is 22000020010037. The next prime is 22000020010219. The reversal of 22000020010121 is 12101002000022.

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 17845251204496 + 4154768805625 = 4224364^2 + 2038325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000020010121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000020010421) 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, 2878826330 + ... + 2878833971.

It is an arithmetic number, because the mean of its divisors is an integer number (5501444418561).

Almost surely, 2^{22000020010121} is an apocalyptic number.

It is an amenable number.

22000020010121 is a deficient number, since it is larger than the sum of its proper divisors (5757664123).

22000020010121 is an equidigital number, since it uses as much as digits as its factorization.

22000020010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757664122.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22000020010121 its reverse (12101002000022), we get a palindrome (34101022010143).

The spelling of 22000020010121 in words is "twenty-two trillion, twenty million, ten thousand, one hundred twenty-one".