121121112003 has 16 divisors (see below), whose sum is σ = 162476265600. Its totient is φ = 80257124160.

The previous prime is 121121111941. The next prime is 121121112023. The reversal of 121121112003 is 300211121121.

It is not a de Polignac number, because 121121112003 - 2¹⁴ = 121121095619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121121112023) 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, 1067808 + ... + 1175778.

It is an arithmetic number, because the mean of its divisors is an integer number (10154766600).

Almost surely, 2^121121112003 is an apocalyptic number.

121121112003 is a deficient number, since it is larger than the sum of its proper divisors (41355153597).

121121112003 is a wasteful number, since it uses less digits than its factorization.

121121112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110242.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121121112003 its reverse (300211121121), we get a palindrome (421332233124).

The spelling of 121121112003 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, three".