20222121012101 has 4 divisors (see below), whose sum is σ = 20291138490252. Its totient is φ = 20153103533952.

The previous prime is 20222121012073. The next prime is 20222121012103. The reversal of 20222121012101 is 10121012122202.

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 9497799422500 + 10724321589601 = 3081850^2 + 3274801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222121012101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20222121012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222121012103) 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, 34508738636 + ... + 34508739221.

It is an arithmetic number, because the mean of its divisors is an integer number (5072784622563).

Almost surely, 2^{20222121012101} is an apocalyptic number.

It is an amenable number.

20222121012101 is a deficient number, since it is larger than the sum of its proper divisors (69017478151).

20222121012101 is an equidigital number, since it uses as much as digits as its factorization.

20222121012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69017478150.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20222121012101 its reverse (10121012122202), we get a palindrome (30343133134303).

The spelling of 20222121012101 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, twelve thousand, one hundred one".