11121211203 has 4 divisors (see below), whose sum is σ = 14828281608. Its totient is φ = 7414140800.

The previous prime is 11121211201. The next prime is 11121211259. The reversal of 11121211203 is 30211212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30211212111 = 3 ⋅10070404037.

It is a cyclic number.

It is not a de Polignac number, because 11121211203 - 2¹ = 11121211201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121211201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1853535198 + ... + 1853535203.

It is an arithmetic number, because the mean of its divisors is an integer number (3707070402).

Almost surely, 2^11121211203 is an apocalyptic number.

11121211203 is a deficient number, since it is larger than the sum of its proper divisors (3707070405).

11121211203 is an equidigital number, since it uses as much as digits as its factorization.

11121211203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707070404.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11121211203 its reverse (30211212111), we get a palindrome (41332423314).

The spelling of 11121211203 in words is "eleven billion, one hundred twenty-one million, two hundred eleven thousand, two hundred three".