2111021003 has 16 divisors (see below), whose sum is σ = 2642223360. Its totient is φ = 1641944736.

The previous prime is 2111020963. The next prime is 2111021009. The reversal of 2111021003 is 3001201112.

It is a cyclic number.

It is not a de Polignac number, because 2111021003 - 2¹⁴ = 2111004619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111021009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191225 + ... + 201962.

It is an arithmetic number, because the mean of its divisors is an integer number (165138960).

Almost surely, 2^2111021003 is an apocalyptic number.

2111021003 is a deficient number, since it is larger than the sum of its proper divisors (531202357).

2111021003 is a wasteful number, since it uses less digits than its factorization.

2111021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393266.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2111021003 is about 45945.8485937522. The cubic root of 2111021003 is about 1282.8154585255.

Adding to 2111021003 its reverse (3001201112), we get a palindrome (5112222115).

The spelling of 2111021003 in words is "two billion, one hundred eleven million, twenty-one thousand, three".