20110101003 has 6 divisors (see below), whose sum is σ = 29047923684. Its totient is φ = 13406733996.

The previous prime is 20110100993. The next prime is 20110101061. The reversal of 20110101003 is 30010101102.

It is not a de Polignac number, because 20110101003 - 2²⁹ = 19573230091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2234455667 = 20110101003 / (2 + 0 + 1 + 1 + 0 + 1 + 0 + 1 + 0 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (20110101103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117227825 + ... + 1117227842.

It is an arithmetic number, because the mean of its divisors is an integer number (4841320614).

Almost surely, 2^20110101003 is an apocalyptic number.

20110101003 is a deficient number, since it is larger than the sum of its proper divisors (8937822681).

20110101003 is a wasteful number, since it uses less digits than its factorization.

20110101003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234455673 (or 2234455670 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20110101003 its reverse (30010101102), we get a palindrome (50120202105).

Subtracting 20110101003 from its reverse (30010101102), we obtain a palindrome (9900000099).

The spelling of 20110101003 in words is "twenty billion, one hundred ten million, one hundred one thousand, three".