10203620225521 has 2 divisors, whose sum is σ = 10203620225522. Its totient is φ = 10203620225520.

The previous prime is 10203620225489. The next prime is 10203620225551. The reversal of 10203620225521 is 12552202630201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8217028639296 + 1986591586225 = 2866536^2 + 1409465^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203620225521 - 2⁵ = 10203620225489 is a prime.

It is a super-2 number, since 2×10203620225521² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10203620225551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101810112760 + 5101810112761.

It is an arithmetic number, because the mean of its divisors is an integer number (5101810112761).

Almost surely, 2^{10203620225521} is an apocalyptic number.

It is an amenable number.

10203620225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203620225521 is an equidigital number, since it uses as much as digits as its factorization.

10203620225521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 10203620225521 its reverse (12552202630201), we get a palindrome (22755822855722).

The spelling of 10203620225521 in words is "ten trillion, two hundred three billion, six hundred twenty million, two hundred twenty-five thousand, five hundred twenty-one".