21124266462631 has 2 divisors, whose sum is σ = 21124266462632. Its totient is φ = 21124266462630.

The previous prime is 21124266462613. The next prime is 21124266462647. The reversal of 21124266462631 is 13626466242112.

Together with previous prime (21124266462613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21124266462631 - 2⁵ = 21124266462599 is a prime.

It is a super-2 number, since 2×21124266462631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21124266460631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562133231315 + 10562133231316.

It is an arithmetic number, because the mean of its divisors is an integer number (10562133231316).

Almost surely, 2^{21124266462631} is an apocalyptic number.

21124266462631 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124266462631 is an equidigital number, since it uses as much as digits as its factorization.

21124266462631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 46.

The spelling of 21124266462631 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred sixty-six million, four hundred sixty-two thousand, six hundred thirty-one".