1011203121203 has 8 divisors (see below), whose sum is σ = 1103137975296. Its totient is φ = 919269483400.

The previous prime is 1011203121161. The next prime is 1011203121217. The reversal of 1011203121203 is 3021213021101.

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 1011203121203 - 2²⁰ = 1011202072627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011205121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2928158 + ... + 3255228.

It is an arithmetic number, because the mean of its divisors is an integer number (137892246912).

Almost surely, 2^{1011203121203} is an apocalyptic number.

1011203121203 is a deficient number, since it is larger than the sum of its proper divisors (91934854093).

1011203121203 is a wasteful number, since it uses less digits than its factorization.

1011203121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608145.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1011203121203 its reverse (3021213021101), we get a palindrome (4032416142304).

The spelling of 1011203121203 in words is "one trillion, eleven billion, two hundred three million, one hundred twenty-one thousand, two hundred three".