1312121101203 has 36 divisors (see below), whose sum is σ = 2085382268424. Its totient is φ = 794410320000.

The previous prime is 1312121101201. The next prime is 1312121101217. The reversal of 1312121101203 is 3021011212131.

It is not a de Polignac number, because 1312121101203 - 2¹ = 1312121101201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312121101201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 447328 + ... + 1680578.

It is an arithmetic number, because the mean of its divisors is an integer number (57927285234).

Almost surely, 2^{1312121101203} is an apocalyptic number.

1312121101203 is a deficient number, since it is larger than the sum of its proper divisors (773261167221).

1312121101203 is a wasteful number, since it uses less digits than its factorization.

1312121101203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234256 (or 1234242 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1312121101203 its reverse (3021011212131), we get a palindrome (4333132313334).

The spelling of 1312121101203 in words is "one trillion, three hundred twelve billion, one hundred twenty-one million, one hundred one thousand, two hundred three".