1121213021103 has 80 divisors (see below), whose sum is σ = 2061774795520. Its totient is φ = 592856578944.

The previous prime is 1121213021099. The next prime is 1121213021153. The reversal of 1121213021103 is 3011203121211.

It is not a de Polignac number, because 1121213021103 - 2² = 1121213021099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121213021153) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 746950 + ... + 1673427.

It is an arithmetic number, because the mean of its divisors is an integer number (25772184944).

Almost surely, 2^{1121213021103} is an apocalyptic number.

1121213021103 is a deficient number, since it is larger than the sum of its proper divisors (940561774417).

1121213021103 is a wasteful number, since it uses less digits than its factorization.

1121213021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420458 (or 2420449 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1121213021103 its reverse (3011203121211), we get a palindrome (4132416142314).

The spelling of 1121213021103 in words is "one trillion, one hundred twenty-one billion, two hundred thirteen million, twenty-one thousand, one hundred three".