10228112252221 has 2 divisors, whose sum is σ = 10228112252222. Its totient is φ = 10228112252220.

The previous prime is 10228112252119. The next prime is 10228112252339. The reversal of 10228112252221 is 12225221182201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6228668232900 + 3999444019321 = 2495730^2 + 1999861^2 .

It is a cyclic number.

It is not a de Polignac number, because 10228112252221 - 2¹¹ = 10228112250173 is a prime.

It is a super-2 number, since 2×10228112252221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10228112652221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5114056126110 + 5114056126111.

It is an arithmetic number, because the mean of its divisors is an integer number (5114056126111).

Almost surely, 2^{10228112252221} is an apocalyptic number.

It is an amenable number.

10228112252221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10228112252221 is an equidigital number, since it uses as much as digits as its factorization.

10228112252221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The spelling of 10228112252221 in words is "ten trillion, two hundred twenty-eight billion, one hundred twelve million, two hundred fifty-two thousand, two hundred twenty-one".