1211102203203 has 6 divisors (see below), whose sum is σ = 1749369849084. Its totient is φ = 807401468796.

The previous prime is 1211102203193. The next prime is 1211102203273. The reversal of 1211102203203 is 3023022011121.

1211102203203 is a `hidden beast` number, since 12 + 1 + 110 + 220 + 320 + 3 = 666.

It is not a de Polignac number, because 1211102203203 - 2⁴ = 1211102203187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211102203273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67283455725 + ... + 67283455742.

It is an arithmetic number, because the mean of its divisors is an integer number (291561641514).

Almost surely, 2^{1211102203203} is an apocalyptic number.

1211102203203 is a deficient number, since it is larger than the sum of its proper divisors (538267645881).

1211102203203 is a wasteful number, since it uses less digits than its factorization.

1211102203203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134566911473 (or 134566911470 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1211102203203 its reverse (3023022011121), we get a palindrome (4234124214324).

The spelling of 1211102203203 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred three thousand, two hundred three".