1203013220221 has 4 divisors (see below), whose sum is σ = 1203618664192. Its totient is φ = 1202407776252.

The previous prime is 1203013220209. The next prime is 1203013220243. The reversal of 1203013220221 is 1220223103021.

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 1203013220221 - 2¹⁷ = 1203013089149 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 (1203013220251) 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, 302719005 + ... + 302722978.

It is an arithmetic number, because the mean of its divisors is an integer number (300904666048).

Almost surely, 2^{1203013220221} is an apocalyptic number.

It is an amenable number.

1203013220221 is a deficient number, since it is larger than the sum of its proper divisors (605443971).

1203013220221 is an equidigital number, since it uses as much as digits as its factorization.

1203013220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605443970.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1203013220221 its reverse (1220223103021), we get a palindrome (2423236323242).

The spelling of 1203013220221 in words is "one trillion, two hundred three billion, thirteen million, two hundred twenty thousand, two hundred twenty-one".