2421043020061 has 2 divisors, whose sum is σ = 2421043020062. Its totient is φ = 2421043020060.

The previous prime is 2421043020041. The next prime is 2421043020173. The reversal of 2421043020061 is 1600203401242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1881097283961 + 539945736100 = 1371531^2 + 734810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421043020061 - 2²³ = 2421034631453 is a prime.

It is a super-2 number, since 2×2421043020061² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421043020041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210521510030 + 1210521510031.

It is an arithmetic number, because the mean of its divisors is an integer number (1210521510031).

Almost surely, 2^{2421043020061} is an apocalyptic number.

It is an amenable number.

2421043020061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421043020061 is an equidigital number, since it uses as much as digits as its factorization.

2421043020061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 2421043020061 in words is "two trillion, four hundred twenty-one billion, forty-three million, twenty thousand, sixty-one".