2103012011 has 4 divisors (see below), whose sum is σ = 2105466792. Its totient is φ = 2100557232.

The previous prime is 2103011993. The next prime is 2103012029. The reversal of 2103012011 is 1102103012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2103011993) and next prime (2103012029).

It is a cyclic number.

It is not a de Polignac number, because 2103012011 - 2⁶ = 2103011947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103011983 and 2103012001.

It is not an unprimeable number, because it can be changed into a prime (2103012071) 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 3 ways as a sum of consecutive naturals, for example, 1226105 + ... + 1227818.

It is an arithmetic number, because the mean of its divisors is an integer number (526366698).

Almost surely, 2^2103012011 is an apocalyptic number.

2103012011 is a deficient number, since it is larger than the sum of its proper divisors (2454781).

2103012011 is an equidigital number, since it uses as much as digits as its factorization.

2103012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454780.

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

The square root of 2103012011 is about 45858.6089082519. The cubic root of 2103012011 is about 1281.1911135466.

Adding to 2103012011 its reverse (1102103012), we get a palindrome (3205115023).

The spelling of 2103012011 in words is "two billion, one hundred three million, twelve thousand, eleven".