10001002222021 has 4 divisors (see below), whose sum is σ = 10001075834944. Its totient is φ = 10000928609100.

The previous prime is 10001002221937. The next prime is 10001002222093. The reversal of 10001002222021 is 12022220010001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001002222021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001002221992 and 10001002222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001002222121) 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 3 ways as a sum of consecutive naturals, for example, 36602295 + ... + 36874516.

It is an arithmetic number, because the mean of its divisors is an integer number (2500268958736).

Almost surely, 2^{10001002222021} is an apocalyptic number.

It is an amenable number.

10001002222021 is a deficient number, since it is larger than the sum of its proper divisors (73612923).

10001002222021 is an equidigital number, since it uses as much as digits as its factorization.

10001002222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73612922.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10001002222021 its reverse (12022220010001), we get a palindrome (22023222232022).

The spelling of 10001002222021 in words is "ten trillion, one billion, two million, two hundred twenty-two thousand, twenty-one".