20221020120101 has 4 divisors (see below), whose sum is σ = 20421228240204. Its totient is φ = 20020812000000.

The previous prime is 20221020120061. The next prime is 20221020120139. The reversal of 20221020120101 is 10102102012202.

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 12908025015076 + 7312995105025 = 3592774^2 + 2704255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221020120101 - 2²² = 20221015925797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221020110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100104059900 + ... + 100104060101.

It is an arithmetic number, because the mean of its divisors is an integer number (5105307060051).

Almost surely, 2^{20221020120101} is an apocalyptic number.

It is an amenable number.

20221020120101 is a deficient number, since it is larger than the sum of its proper divisors (200208120103).

20221020120101 is a wasteful number, since it uses less digits than its factorization.

20221020120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200208120102.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20221020120101 its reverse (10102102012202), we get a palindrome (30323122132303).

The spelling of 20221020120101 in words is "twenty trillion, two hundred twenty-one billion, twenty million, one hundred twenty thousand, one hundred one".