1211013121003 has 8 divisors (see below), whose sum is σ = 1384087681760. Its totient is φ = 1037956731840.

The previous prime is 1211013120943. The next prime is 1211013121013. The reversal of 1211013121003 is 3001213101121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1211013121003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211013121013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4399788 + ... + 4666921.

It is an arithmetic number, because the mean of its divisors is an integer number (173010960220).

Almost surely, 2^{1211013121003} is an apocalyptic number.

1211013121003 is a deficient number, since it is larger than the sum of its proper divisors (173074560757).

1211013121003 is an equidigital number, since it uses as much as digits as its factorization.

1211013121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085797.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1211013121003 its reverse (3001213101121), we get a palindrome (4212226222124).

The spelling of 1211013121003 in words is "one trillion, two hundred eleven billion, thirteen million, one hundred twenty-one thousand, three".