2421033660261 has 8 divisors (see below), whose sum is σ = 3586716533760. Its totient is φ = 1614022440156.

The previous prime is 2421033660247. The next prime is 2421033660263. The reversal of 2421033660261 is 1620663301242.

2421033660261 is a `hidden beast` number, since 2 + 4 + 2 + 1 + 0 + 336 + 60 + 261 = 666.

It is not a de Polignac number, because 2421033660261 - 2⁹ = 2421033659749 is a prime.

It is a super-2 number, since 2×2421033660261² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421033660263) 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, 44833956645 + ... + 44833956698.

It is an arithmetic number, because the mean of its divisors is an integer number (448339566720).

Almost surely, 2^{2421033660261} is an apocalyptic number.

It is an amenable number.

2421033660261 is a deficient number, since it is larger than the sum of its proper divisors (1165682873499).

2421033660261 is an equidigital number, since it uses as much as digits as its factorization.

2421033660261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89667913352 (or 89667913346 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 2421033660261 in words is "two trillion, four hundred twenty-one billion, thirty-three million, six hundred sixty thousand, two hundred sixty-one".