1021014221 has 2 divisors, whose sum is σ = 1021014222. Its totient is φ = 1021014220.

The previous prime is 1021014217. The next prime is 1021014263. The reversal of 1021014221 is 1224101201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723072100 + 297942121 = 26890^2 + 17261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021014221 - 2² = 1021014217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021014196 and 1021014205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021014121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510507110 + 510507111.

It is an arithmetic number, because the mean of its divisors is an integer number (510507111).

Almost surely, 2^1021014221 is an apocalyptic number.

It is an amenable number.

1021014221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021014221 is an equidigital number, since it uses as much as digits as its factorization.

1021014221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1021014221 is about 31953.3131459008. The cubic root of 1021014221 is about 1006.9562388717.

Adding to 1021014221 its reverse (1224101201), we get a palindrome (2245115422).

The spelling of 1021014221 in words is "one billion, twenty-one million, fourteen thousand, two hundred twenty-one".