20101012003 has 2 divisors, whose sum is σ = 20101012004. Its totient is φ = 20101012002.

The previous prime is 20101011991. The next prime is 20101012031. The reversal of 20101012003 is 30021010102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20101012003 - 2²¹ = 20098914851 is a prime.

It is not a weakly prime, because it can be changed into another prime (20101012073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050506001 + 10050506002.

It is an arithmetic number, because the mean of its divisors is an integer number (10050506002).

Almost surely, 2^20101012003 is an apocalyptic number.

20101012003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101012003 is an equidigital number, since it uses as much as digits as its factorization.

20101012003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20101012003 its reverse (30021010102), we get a palindrome (50122022105).

The spelling of 20101012003 in words is "twenty billion, one hundred one million, twelve thousand, three".