2021311103 has 12 divisors (see below), whose sum is σ = 2361091392. Its totient is φ = 1725353280.

The previous prime is 2021311099. The next prime is 2021311109. The reversal of 2021311103 is 3011131202.

It is not a de Polignac number, because 2021311103 - 2² = 2021311099 is a prime.

It is a super-2 number, since 2×2021311103² = 8171397150222153218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021311109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73775 + ... + 97392.

It is an arithmetic number, because the mean of its divisors is an integer number (196757616).

Almost surely, 2^2021311103 is an apocalyptic number.

2021311103 is a deficient number, since it is larger than the sum of its proper divisors (339780289).

2021311103 is a wasteful number, since it uses less digits than its factorization.

2021311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171422 (or 171415 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2021311103 is about 44958.9935719206. The cubic root of 2021311103 is about 1264.3802998225.

Adding to 2021311103 its reverse (3011131202), we get a palindrome (5032442305).

The spelling of 2021311103 in words is "two billion, twenty-one million, three hundred eleven thousand, one hundred three".