20130233417221 has 2 divisors, whose sum is σ = 20130233417222. Its totient is φ = 20130233417220.

The previous prime is 20130233417197. The next prime is 20130233417227. The reversal of 20130233417221 is 12271433203102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13772901526596 + 6357331890625 = 3711186^2 + 2521375^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130233417221 - 2⁷ = 20130233417093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130233417227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065116708610 + 10065116708611.

It is an arithmetic number, because the mean of its divisors is an integer number (10065116708611).

Almost surely, 2^{20130233417221} is an apocalyptic number.

It is an amenable number.

20130233417221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130233417221 is an equidigital number, since it uses as much as digits as its factorization.

20130233417221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 20130233417221 in words is "twenty trillion, one hundred thirty billion, two hundred thirty-three million, four hundred seventeen thousand, two hundred twenty-one".