20103012121003 has 64 divisors (see below), whose sum is σ = 25208432713728. Its totient is φ = 15656083660800.

The previous prime is 20103012120953. The next prime is 20103012121009. The reversal of 20103012121003 is 30012121030102.

It is a de Polignac number, because none of the positive numbers 2^k-20103012121003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103012121009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112182051 + ... + 112361107.

It is an arithmetic number, because the mean of its divisors is an integer number (393881761152).

Almost surely, 2^{20103012121003} is an apocalyptic number.

20103012121003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20103012121003 is a deficient number, since it is larger than the sum of its proper divisors (5105420592725).

20103012121003 is a wasteful number, since it uses less digits than its factorization.

20103012121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179572.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20103012121003 its reverse (30012121030102), we get a palindrome (50115133151105).

The spelling of 20103012121003 in words is "twenty trillion, one hundred three billion, twelve million, one hundred twenty-one thousand, three".