121001011103 has 16 divisors (see below), whose sum is σ = 140257497600. Its totient is φ = 102237660000.

The previous prime is 121001011067. The next prime is 121001011141. The reversal of 121001011103 is 301110100121.

It is a happy number.

It is not a de Polignac number, because 121001011103 - 2²⁰ = 120999962527 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 (121001011193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3735728 + ... + 3767978.

It is an arithmetic number, because the mean of its divisors is an integer number (8766093600).

Almost surely, 2^121001011103 is an apocalyptic number.

121001011103 is a deficient number, since it is larger than the sum of its proper divisors (19256486497).

121001011103 is an equidigital number, since it uses as much as digits as its factorization.

121001011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39878.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 121001011103 its reverse (301110100121), we get a palindrome (422111111224).

The spelling of 121001011103 in words is "one hundred twenty-one billion, one million, eleven thousand, one hundred three".