21232033001213 has 2 divisors, whose sum is σ = 21232033001214. Its totient is φ = 21232033001212.

The previous prime is 21232033001171. The next prime is 21232033001279. The reversal of 21232033001213 is 31210033023212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20228423750404 + 1003609250809 = 4497602^2 + 1001803^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232033001213 - 2¹⁶ = 21232032935677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232033051213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616016500606 + 10616016500607.

It is an arithmetic number, because the mean of its divisors is an integer number (10616016500607).

Almost surely, 2^{21232033001213} is an apocalyptic number.

It is an amenable number.

21232033001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232033001213 is an equidigital number, since it uses as much as digits as its factorization.

21232033001213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21232033001213 its reverse (31210033023212), we get a palindrome (52442066024425).

The spelling of 21232033001213 in words is "twenty-one trillion, two hundred thirty-two billion, thirty-three million, one thousand, two hundred thirteen".