10001200212221 has 4 divisors (see below), whose sum is σ = 10233786263712. Its totient is φ = 9768614160732.

The previous prime is 10001200212193. The next prime is 10001200212281. The reversal of 10001200212221 is 12221200210001.

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 not a de Polignac number, because 10001200212221 - 2¹⁴ = 10001200195837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001200212196 and 10001200212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001200212281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116293025681 + ... + 116293025766.

It is an arithmetic number, because the mean of its divisors is an integer number (2558446565928).

Almost surely, 2^{10001200212221} is an apocalyptic number.

It is an amenable number.

10001200212221 is a deficient number, since it is larger than the sum of its proper divisors (232586051491).

10001200212221 is an equidigital number, since it uses as much as digits as its factorization.

10001200212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232586051490.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10001200212221 its reverse (12221200210001), we get a palindrome (22222400422222).

The spelling of 10001200212221 in words is "ten trillion, one billion, two hundred million, two hundred twelve thousand, two hundred twenty-one".