1230235320221 has 2 divisors, whose sum is σ = 1230235320222. Its totient is φ = 1230235320220.

The previous prime is 1230235320211. The next prime is 1230235320227. The reversal of 1230235320221 is 1220235320321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204914554596 + 25320765625 = 1097686^2 + 159125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230235320221 - 2⁶ = 1230235320157 is a prime.

It is a super-2 number, since 2×1230235320221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230235320227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615117660110 + 615117660111.

It is an arithmetic number, because the mean of its divisors is an integer number (615117660111).

Almost surely, 2^{1230235320221} is an apocalyptic number.

It is an amenable number.

1230235320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230235320221 is an equidigital number, since it uses as much as digits as its factorization.

1230235320221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 1230235320221 in words is "one trillion, two hundred thirty billion, two hundred thirty-five million, three hundred twenty thousand, two hundred twenty-one".