11403132121 has 2 divisors, whose sum is σ = 11403132122. Its totient is φ = 11403132120.

The previous prime is 11403132113. The next prime is 11403132149. The reversal of 11403132121 is 12123130411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10310168521 + 1092963600 = 101539^2 + 33060^2 .

It is a cyclic number.

It is not a de Polignac number, because 11403132121 - 2³ = 11403132113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11403133121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701566060 + 5701566061.

It is an arithmetic number, because the mean of its divisors is an integer number (5701566061).

Almost surely, 2^11403132121 is an apocalyptic number.

It is an amenable number.

11403132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11403132121 is an equidigital number, since it uses as much as digits as its factorization.

11403132121 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 11403132121 its reverse (12123130411), we get a palindrome (23526262532).

The spelling of 11403132121 in words is "eleven billion, four hundred three million, one hundred thirty-two thousand, one hundred twenty-one".