10455420221 has 2 divisors, whose sum is σ = 10455420222. Its totient is φ = 10455420220.

The previous prime is 10455420197. The next prime is 10455420229. The reversal of 10455420221 is 12202455401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10126396900 + 329023321 = 100630^2 + 18139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10455420221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10455420229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5227710110 + 5227710111.

It is an arithmetic number, because the mean of its divisors is an integer number (5227710111).

Almost surely, 2^10455420221 is an apocalyptic number.

It is an amenable number.

10455420221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10455420221 is an equidigital number, since it uses as much as digits as its factorization.

10455420221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 10455420221 its reverse (12202455401), we get a palindrome (22657875622).

The spelling of 10455420221 in words is "ten billion, four hundred fifty-five million, four hundred twenty thousand, two hundred twenty-one".