13212103012021 has 2 divisors, whose sum is σ = 13212103012022. Its totient is φ = 13212103012020.

The previous prime is 13212103012013. The next prime is 13212103012033. The reversal of 13212103012021 is 12021030121231.

13212103012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11845918404100 + 1366184607921 = 3441790^2 + 1168839^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212103012021 - 2³ = 13212103012013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13212103012021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13212103018021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606051506010 + 6606051506011.

It is an arithmetic number, because the mean of its divisors is an integer number (6606051506011).

Almost surely, 2^{13212103012021} is an apocalyptic number.

It is an amenable number.

13212103012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212103012021 is an equidigital number, since it uses as much as digits as its factorization.

13212103012021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 13212103012021 its reverse (12021030121231), we get a palindrome (25233133133252).

The spelling of 13212103012021 in words is "thirteen trillion, two hundred twelve billion, one hundred three million, twelve thousand, twenty-one".