10121312321203 has 4 divisors (see below), whose sum is σ = 10122341651928. Its totient is φ = 10120282990480.

The previous prime is 10121312321191. The next prime is 10121312321279. The reversal of 10121312321203 is 30212321312101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10121312321203 - 2⁵ = 10121312321171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121318321203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514650613 + ... + 514670278.

It is an arithmetic number, because the mean of its divisors is an integer number (2530585412982).

Almost surely, 2^{10121312321203} is an apocalyptic number.

10121312321203 is a deficient number, since it is larger than the sum of its proper divisors (1029330725).

10121312321203 is an equidigital number, since it uses as much as digits as its factorization.

10121312321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029330724.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 10121312321203 its reverse (30212321312101), we get a palindrome (40333633633304).

The spelling of 10121312321203 in words is "ten trillion, one hundred twenty-one billion, three hundred twelve million, three hundred twenty-one thousand, two hundred three".