1200103142221 has 4 divisors (see below), whose sum is σ = 1200118471744. Its totient is φ = 1200087812700.

The previous prime is 1200103142179. The next prime is 1200103142237. The reversal of 1200103142221 is 1222413010021.

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-1200103142221 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 (1200103142261) 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, 7546725 + ... + 7704106.

It is an arithmetic number, because the mean of its divisors is an integer number (300029617936).

Almost surely, 2^{1200103142221} is an apocalyptic number.

It is an amenable number.

1200103142221 is a deficient number, since it is larger than the sum of its proper divisors (15329523).

1200103142221 is an equidigital number, since it uses as much as digits as its factorization.

1200103142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15329522.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1200103142221 its reverse (1222413010021), we get a palindrome (2422516152242).

The spelling of 1200103142221 in words is "one trillion, two hundred billion, one hundred three million, one hundred forty-two thousand, two hundred twenty-one".