20269208101 has 2 divisors, whose sum is σ = 20269208102. Its totient is φ = 20269208100.

The previous prime is 20269208081. The next prime is 20269208107. The reversal of 20269208101 is 10180296202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11935344001 + 8333864100 = 109249^2 + 91290^2 .

It is a cyclic number.

It is not a de Polignac number, because 20269208101 - 2²³ = 20260819493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20269208107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10134604050 + 10134604051.

It is an arithmetic number, because the mean of its divisors is an integer number (10134604051).

Almost surely, 2^20269208101 is an apocalyptic number.

It is an amenable number.

20269208101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20269208101 is an equidigital number, since it uses as much as digits as its factorization.

20269208101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 20269208101 in words is "twenty billion, two hundred sixty-nine million, two hundred eight thousand, one hundred one".