410001200021 has 12 divisors (see below), whose sum is σ = 477148845888. Its totient is φ = 351275839992.

The previous prime is 410001199987. The next prime is 410001200023. The reversal of 410001200021 is 120002100014.

It is a de Polignac number, because none of the positive numbers 2^k-410001200021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 410001199975 and 410001200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (410001200023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1717271 + ... + 1941396.

It is an arithmetic number, because the mean of its divisors is an integer number (39762403824).

Almost surely, 2^410001200021 is an apocalyptic number.

It is an amenable number.

410001200021 is a deficient number, since it is larger than the sum of its proper divisors (67147645867).

410001200021 is a wasteful number, since it uses less digits than its factorization.

410001200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660968 (or 3660961 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 410001200021 its reverse (120002100014), we get a palindrome (530003300035).

The spelling of 410001200021 in words is "four hundred ten billion, one million, two hundred thousand, twenty-one".