121031111103 has 8 divisors (see below), whose sum is σ = 184428359808. Its totient is φ = 69160634904.

The previous prime is 121031111077. The next prime is 121031111111. The reversal of 121031111103 is 301111130121.

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

It is not a de Polignac number, because 121031111103 - 2⁶ = 121031111039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031111153) 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, 2881693101 + ... + 2881693142.

It is an arithmetic number, because the mean of its divisors is an integer number (23053544976).

Almost surely, 2^121031111103 is an apocalyptic number.

121031111103 is a deficient number, since it is larger than the sum of its proper divisors (63397248705).

121031111103 is an equidigital number, since it uses as much as digits as its factorization.

121031111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763386253.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 121031111103 its reverse (301111130121), we get a palindrome (422142241224).

The spelling of 121031111103 in words is "one hundred twenty-one billion, thirty-one million, one hundred eleven thousand, one hundred three".