1310203100121 has 4 divisors (see below), whose sum is σ = 1746937466832. Its totient is φ = 873468733412.

The previous prime is 1310203100053. The next prime is 1310203100137. The reversal of 1310203100121 is 1210013020131.

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 1310203100121 - 2⁹ = 1310203099609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1310203100121.

It is not an unprimeable number, because it can be changed into a prime (1310203100191) 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, 218367183351 + ... + 218367183356.

It is an arithmetic number, because the mean of its divisors is an integer number (436734366708).

Almost surely, 2^{1310203100121} is an apocalyptic number.

It is an amenable number.

1310203100121 is a deficient number, since it is larger than the sum of its proper divisors (436734366711).

1310203100121 is an equidigital number, since it uses as much as digits as its factorization.

1310203100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436734366710.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1310203100121 its reverse (1210013020131), we get a palindrome (2520216120252).

The spelling of 1310203100121 in words is "one trillion, three hundred ten billion, two hundred three million, one hundred thousand, one hundred twenty-one".