21124266462641 has 16 divisors (see below), whose sum is σ = 21712687920000. Its totient is φ = 20546403774336.

The previous prime is 21124266462631. The next prime is 21124266462647. The reversal of 21124266462641 is 14626466242112.

It is a cyclic number.

It is not a de Polignac number, because 21124266462641 - 2⁶ = 21124266462577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21124266462647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6484421 + ... + 9181298.

It is an arithmetic number, because the mean of its divisors is an integer number (1357042995000).

Almost surely, 2^{21124266462641} is an apocalyptic number.

It is an amenable number.

21124266462641 is a deficient number, since it is larger than the sum of its proper divisors (588421457359).

21124266462641 is a wasteful number, since it uses less digits than its factorization.

21124266462641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15666056.

The product of its digits is 1327104, while the sum is 47.

The spelling of 21124266462641 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred sixty-six million, four hundred sixty-two thousand, six hundred forty-one".