1213110120003 has 32 divisors (see below), whose sum is σ = 1702729728000. Its totient is φ = 766748860416.

The previous prime is 1213110119989. The next prime is 1213110120011. The reversal of 1213110120003 is 3000210113121.

It is a happy number.

It is not a de Polignac number, because 1213110120003 - 2⁸ = 1213110119747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213110127003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9126403 + ... + 9258371.

It is an arithmetic number, because the mean of its divisors is an integer number (53210304000).

Almost surely, 2^{1213110120003} is an apocalyptic number.

1213110120003 is a deficient number, since it is larger than the sum of its proper divisors (489619607997).

1213110120003 is a wasteful number, since it uses less digits than its factorization.

1213110120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133171.

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

Adding to 1213110120003 its reverse (3000210113121), we get a palindrome (4213320233124).

The spelling of 1213110120003 in words is "one trillion, two hundred thirteen billion, one hundred ten million, one hundred twenty thousand, three".