11111211021203 has 8 divisors (see below), whose sum is σ = 11164748200896. Its totient is φ = 11057682119400.

The previous prime is 11111211021199. The next prime is 11111211021221. The reversal of 11111211021203 is 30212011211111.

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

It is a cyclic number.

It is not a de Polignac number, because 11111211021203 - 2² = 11111211021199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111211021283) 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, 630008 + ... + 4755978.

It is an arithmetic number, because the mean of its divisors is an integer number (1395593525112).

Almost surely, 2^{11111211021203} is an apocalyptic number.

11111211021203 is a deficient number, since it is larger than the sum of its proper divisors (53537179693).

11111211021203 is a wasteful number, since it uses less digits than its factorization.

11111211021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4138945.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 11111211021203 its reverse (30212011211111), we get a palindrome (41323222232314).

The spelling of 11111211021203 in words is "eleven trillion, one hundred eleven billion, two hundred eleven million, twenty-one thousand, two hundred three".