20125233101 has 2 divisors, whose sum is σ = 20125233102. Its totient is φ = 20125233100.

The previous prime is 20125233083. The next prime is 20125233109. The reversal of 20125233101 is 10133252102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18906525001 + 1218708100 = 137501^2 + 34910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125233101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20125233109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062616550 + 10062616551.

It is an arithmetic number, because the mean of its divisors is an integer number (10062616551).

Almost surely, 2^20125233101 is an apocalyptic number.

It is an amenable number.

20125233101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20125233101 is an equidigital number, since it uses as much as digits as its factorization.

20125233101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20125233101 its reverse (10133252102), we get a palindrome (30258485203).

The spelling of 20125233101 in words is "twenty billion, one hundred twenty-five million, two hundred thirty-three thousand, one hundred one".