1022225400221 has 2 divisors, whose sum is σ = 1022225400222. Its totient is φ = 1022225400220.

The previous prime is 1022225400109. The next prime is 1022225400233. The reversal of 1022225400221 is 1220045222201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 735925495321 + 286299904900 = 857861^2 + 535070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022225400221 - 2¹⁰ = 1022225399197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022225400281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511112700110 + 511112700111.

It is an arithmetic number, because the mean of its divisors is an integer number (511112700111).

Almost surely, 2^{1022225400221} is an apocalyptic number.

It is an amenable number.

1022225400221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022225400221 is an equidigital number, since it uses as much as digits as its factorization.

1022225400221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The spelling of 1022225400221 in words is "one trillion, twenty-two billion, two hundred twenty-five million, four hundred thousand, two hundred twenty-one".