13401033221 has 2 divisors, whose sum is σ = 13401033222. Its totient is φ = 13401033220.

The previous prime is 13401033211. The next prime is 13401033253. The reversal of 13401033221 is 12233010431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10683496321 + 2717536900 = 103361^2 + 52130^2 .

It is an emirp because it is prime and its reverse (12233010431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13401033221 - 2³⁰ = 12327291397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13401033193 and 13401033202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13401033211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700516610 + 6700516611.

It is an arithmetic number, because the mean of its divisors is an integer number (6700516611).

Almost surely, 2^13401033221 is an apocalyptic number.

It is an amenable number.

13401033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13401033221 is an equidigital number, since it uses as much as digits as its factorization.

13401033221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13401033221 its reverse (12233010431), we get a palindrome (25634043652).

The spelling of 13401033221 in words is "thirteen billion, four hundred one million, thirty-three thousand, two hundred twenty-one".