21002096241 has 81 divisors (see below), whose sum is σ = 36174983481. Its totient is φ = 11707298064.

The previous prime is 21002096239. The next prime is 21002096243. The reversal of 21002096241 is 14269020012.

The square root of 21002096241 is 144921.

It is a perfect power (a square), and thus also a powerful number.

21002096241 is a `hidden beast` number, since 2 + 10 + 0 + 20 + 9 + 624 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21002096239) and next prime (21002096243).

It is not a de Polignac number, because 21002096241 - 2¹ = 21002096239 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21002096243) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 203903796 + ... + 203903898.

Almost surely, 2^21002096241 is an apocalyptic number.

21002096241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21002096241 is the 144921-st square number.

21002096241 is the 72461-st centered octagonal number.

It is an amenable number.

21002096241 is a deficient number, since it is larger than the sum of its proper divisors (15172887240).

21002096241 is an equidigital number, since it uses as much as digits as its factorization.

21002096241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 21002096241 in words is "twenty-one billion, two million, ninety-six thousand, two hundred forty-one".