10025123221 has 2 divisors, whose sum is σ = 10025123222. Its totient is φ = 10025123220.

The previous prime is 10025123203. The next prime is 10025123233. The reversal of 10025123221 is 12232152001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7036860996 + 2988262225 = 83886^2 + 54665^2 .

It is a cyclic number.

It is not a de Polignac number, because 10025123221 - 2⁵ = 10025123189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10025123291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5012561610 + 5012561611.

It is an arithmetic number, because the mean of its divisors is an integer number (5012561611).

Almost surely, 2^10025123221 is an apocalyptic number.

It is an amenable number.

10025123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10025123221 is an equidigital number, since it uses as much as digits as its factorization.

10025123221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 10025123221 its reverse (12232152001), we get a palindrome (22257275222).

The spelling of 10025123221 in words is "ten billion, twenty-five million, one hundred twenty-three thousand, two hundred twenty-one".