20013002121003 has 4 divisors (see below), whose sum is σ = 26684002828008. Its totient is φ = 13342001414000.

The previous prime is 20013002120999. The next prime is 20013002121137. The reversal of 20013002121003 is 30012120031002.

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 20013002121003 - 2² = 20013002120999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013002120003) 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, 3335500353498 + ... + 3335500353503.

It is an arithmetic number, because the mean of its divisors is an integer number (6671000707002).

Almost surely, 2^{20013002121003} is an apocalyptic number.

20013002121003 is a deficient number, since it is larger than the sum of its proper divisors (6671000707005).

20013002121003 is an equidigital number, since it uses as much as digits as its factorization.

20013002121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671000707004.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20013002121003 its reverse (30012120031002), we get a palindrome (50025122152005).

The spelling of 20013002121003 in words is "twenty trillion, thirteen billion, two million, one hundred twenty-one thousand, three".