11146621232421 has 8 divisors (see below), whose sum is σ = 16513512936960. Its totient is φ = 7431080821596.

The previous prime is 11146621232401. The next prime is 11146621232423. The reversal of 11146621232421 is 12423212664111.

11146621232421 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 6 + 621 + 2 + 3 + 2 + 4 + 21 = 666.

It is not a de Polignac number, because 11146621232421 - 2¹⁴ = 11146621216037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11146621232423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206418911685 + ... + 206418911738.

It is an arithmetic number, because the mean of its divisors is an integer number (2064189117120).

Almost surely, 2^{11146621232421} is an apocalyptic number.

It is an amenable number.

11146621232421 is a deficient number, since it is larger than the sum of its proper divisors (5366891704539).

11146621232421 is an equidigital number, since it uses as much as digits as its factorization.

11146621232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412837823432 (or 412837823426 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

Adding to 11146621232421 its reverse (12423212664111), we get a palindrome (23569833896532).

The spelling of 11146621232421 in words is "eleven trillion, one hundred forty-six billion, six hundred twenty-one million, two hundred thirty-two thousand, four hundred twenty-one".