232221133021421 has 2 divisors, whose sum is σ = 232221133021422. Its totient is φ = 232221133021420.

The previous prime is 232221133021417. The next prime is 232221133021447. The reversal of 232221133021421 is 124120331122232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231717991065796 + 503141955625 = 15222286^2 + 709325^2 .

It is a cyclic number.

It is not a de Polignac number, because 232221133021421 - 2² = 232221133021417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232221133021021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116110566510710 + 116110566510711.

It is an arithmetic number, because the mean of its divisors is an integer number (116110566510711).

Almost surely, 2^{232221133021421} is an apocalyptic number.

It is an amenable number.

232221133021421 is a deficient number, since it is larger than the sum of its proper divisors (1).

232221133021421 is an equidigital number, since it uses as much as digits as its factorization.

232221133021421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 232221133021421 its reverse (124120331122232), we get a palindrome (356341464143653).

The spelling of 232221133021421 in words is "two hundred thirty-two trillion, two hundred twenty-one billion, one hundred thirty-three million, twenty-one thousand, four hundred twenty-one".