20022021101 has 2 divisors, whose sum is σ = 20022021102. Its totient is φ = 20022021100.

The previous prime is 20022021083. The next prime is 20022021113. The reversal of 20022021101 is 10112022002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13747797001 + 6274224100 = 117251^2 + 79210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022021101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011010550 + 10011010551.

It is an arithmetic number, because the mean of its divisors is an integer number (10011010551).

Almost surely, 2^20022021101 is an apocalyptic number.

It is an amenable number.

20022021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022021101 is an equidigital number, since it uses as much as digits as its factorization.

20022021101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20022021101 its reverse (10112022002), we get a palindrome (30134043103).

Subtracting from 20022021101 its reverse (10112022002), we obtain a palindrome (9909999099).

The spelling of 20022021101 in words is "twenty billion, twenty-two million, twenty-one thousand, one hundred one".