121003111010003 has 16 divisors (see below), whose sum is σ = 125457909350400. Its totient is φ = 116583384807840.

The previous prime is 121003111009973. The next prime is 121003111010011. The reversal of 121003111010003 is 300010111300121.

It is a happy number.

It is not a de Polignac number, because 121003111010003 - 2⁸ = 121003111009747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121003111010003.

It is not an unprimeable number, because it can be changed into a prime (121003111010053) 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, 6957950 + ... + 17041692.

It is an arithmetic number, because the mean of its divisors is an integer number (7841119334400).

Almost surely, 2^{121003111010003} is an apocalyptic number.

121003111010003 is a deficient number, since it is larger than the sum of its proper divisors (4454798340397).

121003111010003 is a wasteful number, since it uses less digits than its factorization.

121003111010003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10085482.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 121003111010003 its reverse (300010111300121), we get a palindrome (421013222310124).

The spelling of 121003111010003 in words is "one hundred twenty-one trillion, three billion, one hundred eleven million, ten thousand, three".