2013021111 has 16 divisors (see below), whose sum is σ = 2802758400. Its totient is φ = 1282733760.

The previous prime is 2013021107. The next prime is 2013021121. The reversal of 2013021111 is 1111203102.

It is not a de Polignac number, because 2013021111 - 2² = 2013021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013021121) 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, 92340 + ... + 112038.

It is an arithmetic number, because the mean of its divisors is an integer number (175172400).

Almost surely, 2^2013021111 is an apocalyptic number.

2013021111 is a deficient number, since it is larger than the sum of its proper divisors (789737289).

2013021111 is a wasteful number, since it uses less digits than its factorization.

2013021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21206.

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

The square root of 2013021111 is about 44866.7038125156. The cubic root of 2013021111 is about 1262.6493993836.

Adding to 2013021111 its reverse (1111203102), we get a palindrome (3124224213).

The spelling of 2013021111 in words is "two billion, thirteen million, twenty-one thousand, one hundred eleven".