103211012321 has 2 divisors, whose sum is σ = 103211012322. Its totient is φ = 103211012320.

The previous prime is 103211012309. The next prime is 103211012327. The reversal of 103211012321 is 123210112301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83900019025 + 19310993296 = 289655^2 + 138964^2 .

It is a cyclic number.

It is not a de Polignac number, because 103211012321 - 2¹⁰ = 103211011297 is a prime.

It is a super-2 number, since 2×103211012321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103211012321.

It is not a weakly prime, because it can be changed into another prime (103211012327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51605506160 + 51605506161.

It is an arithmetic number, because the mean of its divisors is an integer number (51605506161).

Almost surely, 2^103211012321 is an apocalyptic number.

It is an amenable number.

103211012321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103211012321 is an equidigital number, since it uses as much as digits as its factorization.

103211012321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103211012321 its reverse (123210112301), we get a palindrome (226421124622).

The spelling of 103211012321 in words is "one hundred three billion, two hundred eleven million, twelve thousand, three hundred twenty-one".