11355130421 has 4 divisors (see below), whose sum is σ = 11431339500. Its totient is φ = 11278921344.

The previous prime is 11355130373. The next prime is 11355130447. The reversal of 11355130421 is 12403155311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12403155311 = 1237 ⋅10026803.

It can be written as a sum of positive squares in 2 ways, for example, as 7349632900 + 4005497521 = 85730^2 + 63289^2 .

It is a cyclic number.

It is not a de Polignac number, because 11355130421 - 2¹⁰ = 11355129397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355130321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38104316 + ... + 38104613.

It is an arithmetic number, because the mean of its divisors is an integer number (2857834875).

Almost surely, 2^11355130421 is an apocalyptic number.

It is an amenable number.

11355130421 is a deficient number, since it is larger than the sum of its proper divisors (76209079).

11355130421 is an equidigital number, since it uses as much as digits as its factorization.

11355130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76209078.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 11355130421 its reverse (12403155311), we get a palindrome (23758285732).

The spelling of 11355130421 in words is "eleven billion, three hundred fifty-five million, one hundred thirty thousand, four hundred twenty-one".