1211142044203 has 16 divisors (see below), whose sum is σ = 1578320856000. Its totient is φ = 901897629696.

The previous prime is 1211142044173. The next prime is 1211142044213. The reversal of 1211142044203 is 3024402411121.

It is not a de Polignac number, because 1211142044203 - 2⁵ = 1211142044171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211142044213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391447078 + ... + 391450171.

It is an arithmetic number, because the mean of its divisors is an integer number (98645053500).

Almost surely, 2^{1211142044203} is an apocalyptic number.

1211142044203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1211142044203 is a deficient number, since it is larger than the sum of its proper divisors (367178811797).

1211142044203 is a wasteful number, since it uses less digits than its factorization.

1211142044203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782897286.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1211142044203 its reverse (3024402411121), we get a palindrome (4235544455324).

The spelling of 1211142044203 in words is "one trillion, two hundred eleven billion, one hundred forty-two million, forty-four thousand, two hundred three".