20221242101 has 2 divisors, whose sum is σ = 20221242102. Its totient is φ = 20221242100.

The previous prime is 20221242091. The next prime is 20221242149. The reversal of 20221242101 is 10124212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13203159025 + 7018083076 = 114905^2 + 83774^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221242101 - 2⁶ = 20221242037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20221242101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221242901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110621050 + 10110621051.

It is an arithmetic number, because the mean of its divisors is an integer number (10110621051).

Almost surely, 2^20221242101 is an apocalyptic number.

It is an amenable number.

20221242101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221242101 is an equidigital number, since it uses as much as digits as its factorization.

20221242101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20221242101 its reverse (10124212202), we get a palindrome (30345454303).

The spelling of 20221242101 in words is "twenty billion, two hundred twenty-one million, two hundred forty-two thousand, one hundred one".