1000012200221 has 4 divisors (see below), whose sum is σ = 1000017408000. Its totient is φ = 1000006992444.

The previous prime is 1000012200217. The next prime is 1000012200233. The reversal of 1000012200221 is 1220022100001.

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 not a de Polignac number, because 1000012200221 - 2² = 1000012200217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012200211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304371 + ... + 2703728.

It is an arithmetic number, because the mean of its divisors is an integer number (250004352000).

Almost surely, 2^{1000012200221} is an apocalyptic number.

It is an amenable number.

1000012200221 is a deficient number, since it is larger than the sum of its proper divisors (5207779).

1000012200221 is an equidigital number, since it uses as much as digits as its factorization.

1000012200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207778.

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

Adding to 1000012200221 its reverse (1220022100001), we get a palindrome (2220034300222).

The spelling of 1000012200221 in words is "one trillion, twelve million, two hundred thousand, two hundred twenty-one".