1203220112021 has 4 divisors (see below), whose sum is σ = 1203225189792. Its totient is φ = 1203215034252.

The previous prime is 1203220111987. The next prime is 1203220112027. The reversal of 1203220112021 is 1202110223021.

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 1203220112021 - 2⁶ = 1203220111957 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 (1203220112027) 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, 2165105 + ... + 2663478.

It is an arithmetic number, because the mean of its divisors is an integer number (300806297448).

Almost surely, 2^{1203220112021} is an apocalyptic number.

It is an amenable number.

1203220112021 is a deficient number, since it is larger than the sum of its proper divisors (5077771).

1203220112021 is an equidigital number, since it uses as much as digits as its factorization.

1203220112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077770.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1203220112021 its reverse (1202110223021), we get a palindrome (2405330335042).

The spelling of 1203220112021 in words is "one trillion, two hundred three billion, two hundred twenty million, one hundred twelve thousand, twenty-one".