10203620264221 has 2 divisors, whose sum is σ = 10203620264222. Its totient is φ = 10203620264220.

The previous prime is 10203620264219. The next prime is 10203620264261. The reversal of 10203620264221 is 12246202630201.

10203620264221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9184015104196 + 1019605160025 = 3030514^2 + 1009755^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203620264221 - 2¹ = 10203620264219 is a prime.

It is a super-2 number, since 2×10203620264221² (a number of 27 digits) contains 22 as substring.

Together with 10203620264219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203620264261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101810132110 + 5101810132111.

It is an arithmetic number, because the mean of its divisors is an integer number (5101810132111).

Almost surely, 2^{10203620264221} is an apocalyptic number.

It is an amenable number.

10203620264221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203620264221 is an equidigital number, since it uses as much as digits as its factorization.

10203620264221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 10203620264221 its reverse (12246202630201), we get a palindrome (22449822894422).

The spelling of 10203620264221 in words is "ten trillion, two hundred three billion, six hundred twenty million, two hundred sixty-four thousand, two hundred twenty-one".