1203210313121 has 4 divisors (see below), whose sum is σ = 1206081937200. Its totient is φ = 1200338689044.

The previous prime is 1203210313093. The next prime is 1203210313183. The reversal of 1203210313121 is 1213130123021.

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 1203210313121 - 2²⁶ = 1203143204257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203210313093 and 1203210313102.

It is not an unprimeable number, because it can be changed into a prime (1203210310121) 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, 1435811411 + ... + 1435812248.

It is an arithmetic number, because the mean of its divisors is an integer number (301520484300).

Almost surely, 2^{1203210313121} is an apocalyptic number.

It is an amenable number.

1203210313121 is a deficient number, since it is larger than the sum of its proper divisors (2871624079).

1203210313121 is an equidigital number, since it uses as much as digits as its factorization.

1203210313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871624078.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1203210313121 its reverse (1213130123021), we get a palindrome (2416340436142).

The spelling of 1203210313121 in words is "one trillion, two hundred three billion, two hundred ten million, three hundred thirteen thousand, one hundred twenty-one".