1303213322121 has 4 divisors (see below), whose sum is σ = 1737617762832. Its totient is φ = 868808881412.

The previous prime is 1303213322119. The next prime is 1303213322149. The reversal of 1303213322121 is 1212233123031.

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 1303213322121 - 2¹ = 1303213322119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303213322091 and 1303213322100.

It is not an unprimeable number, because it can be changed into a prime (1303213323121) 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, 217202220351 + ... + 217202220356.

It is an arithmetic number, because the mean of its divisors is an integer number (434404440708).

Almost surely, 2^{1303213322121} is an apocalyptic number.

It is an amenable number.

1303213322121 is a deficient number, since it is larger than the sum of its proper divisors (434404440711).

1303213322121 is an equidigital number, since it uses as much as digits as its factorization.

1303213322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434404440710.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1303213322121 its reverse (1212233123031), we get a palindrome (2515446445152).

The spelling of 1303213322121 in words is "one trillion, three hundred three billion, two hundred thirteen million, three hundred twenty-two thousand, one hundred twenty-one".