103213010321 has 2 divisors, whose sum is σ = 103213010322. Its totient is φ = 103213010320.

The previous prime is 103213010287. The next prime is 103213010429. The reversal of 103213010321 is 123010312301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74577601921 + 28635408400 = 273089^2 + 169220^2 .

It is an emirp because it is prime and its reverse (123010312301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103213010321 - 2¹⁴ = 103212993937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103213010321.

It is not a weakly prime, because it can be changed into another prime (103213810321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51606505160 + 51606505161.

It is an arithmetic number, because the mean of its divisors is an integer number (51606505161).

Almost surely, 2^103213010321 is an apocalyptic number.

It is an amenable number.

103213010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103213010321 is an equidigital number, since it uses as much as digits as its factorization.

103213010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103213010321 its reverse (123010312301), we get a palindrome (226223322622).

The spelling of 103213010321 in words is "one hundred three billion, two hundred thirteen million, ten thousand, three hundred twenty-one".