10202204432421 has 10 divisors (see below), whose sum is σ = 15240330078182. Its totient is φ = 6801469621560.

The previous prime is 10202204432417. The next prime is 10202204432429. The reversal of 10202204432421 is 12423440220201.

It is a happy number.

10202204432421 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 2 + 204 + 4 + 32 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9798997212225 + 403207220196 = 3130335^2 + 634986^2 .

It is not a de Polignac number, because 10202204432421 - 2² = 10202204432417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202204432429) 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 in 9 ways as a sum of consecutive naturals, for example, 62976570490 + ... + 62976570651.

Almost surely, 2^{10202204432421} is an apocalyptic number.

It is an amenable number.

10202204432421 is a deficient number, since it is larger than the sum of its proper divisors (5038125645761).

10202204432421 is an equidigital number, since it uses as much as digits as its factorization.

10202204432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125953141153 (or 125953141144 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 10202204432421 its reverse (12423440220201), we get a palindrome (22625644652622).

The spelling of 10202204432421 in words is "ten trillion, two hundred two billion, two hundred four million, four hundred thirty-two thousand, four hundred twenty-one".