11461249021 has 2 divisors, whose sum is σ = 11461249022. Its totient is φ = 11461249020.

The previous prime is 11461248977. The next prime is 11461249127. The reversal of 11461249021 is 12094216411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7188665796 + 4272583225 = 84786^2 + 65365^2 .

It is a cyclic number.

It is not a de Polignac number, because 11461249021 - 2⁷ = 11461248893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11461249321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5730624510 + 5730624511.

It is an arithmetic number, because the mean of its divisors is an integer number (5730624511).

Almost surely, 2^11461249021 is an apocalyptic number.

It is an amenable number.

11461249021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11461249021 is an equidigital number, since it uses as much as digits as its factorization.

11461249021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 11461249021 in words is "eleven billion, four hundred sixty-one million, two hundred forty-nine thousand, twenty-one".