20101073 has 2 divisors, whose sum is σ = 20101074. Its totient is φ = 20101072.

The previous prime is 20101013. The next prime is 20101079. The reversal of 20101073 is 37010102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14010049 + 6091024 = 3743^2 + 2468^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101073 - 2⁶ = 20101009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050536 + 10050537.

It is an arithmetic number, because the mean of its divisors is an integer number (10050537).

Almost surely, 2^20101073 is an apocalyptic number.

It is an amenable number.

20101073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101073 is an equidigital number, since it uses as much as digits as its factorization.

20101073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20101073 is about 4483.4220189494. The cubic root of 20101073 is about 271.8982507618.

Adding to 20101073 its reverse (37010102), we get a palindrome (57111175).

The spelling of 20101073 in words is "twenty million, one hundred one thousand, seventy-three".