2020122110021 has 2 divisors, whose sum is σ = 2020122110022. Its totient is φ = 2020122110020.

The previous prime is 2020122110011. The next prime is 2020122110051. The reversal of 2020122110021 is 1200112210202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1684778040100 + 335344069921 = 1297990^2 + 579089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020122110021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2020122109978 and 2020122110005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020122110011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010061055010 + 1010061055011.

It is an arithmetic number, because the mean of its divisors is an integer number (1010061055011).

Almost surely, 2^{2020122110021} is an apocalyptic number.

It is an amenable number.

2020122110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020122110021 is an equidigital number, since it uses as much as digits as its factorization.

2020122110021 is an evil number, because the sum of its binary digits is even.

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

Adding to 2020122110021 its reverse (1200112210202), we get a palindrome (3220234320223).

The spelling of 2020122110021 in words is "two trillion, twenty billion, one hundred twenty-two million, one hundred ten thousand, twenty-one".