10001200220001 has 8 divisors (see below), whose sum is σ = 14816592918560. Its totient is φ = 6667466813316.

The previous prime is 10001200219991. The next prime is 10001200220017. The reversal of 10001200220001 is 10002200210001.

It is not a de Polignac number, because 10001200220001 - 2¹⁵ = 10001200187233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001200220801) 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, 185207411455 + ... + 185207411508.

It is an arithmetic number, because the mean of its divisors is an integer number (1852074114820).

Almost surely, 2^{10001200220001} is an apocalyptic number.

It is an amenable number.

10001200220001 is a deficient number, since it is larger than the sum of its proper divisors (4815392698559).

10001200220001 is an equidigital number, since it uses as much as digits as its factorization.

10001200220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370414822972 (or 370414822966 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10001200220001 its reverse (10002200210001), we get a palindrome (20003400430002).

The spelling of 10001200220001 in words is "ten trillion, one billion, two hundred million, two hundred twenty thousand, one".