2011121110 has 8 divisors (see below), whose sum is σ = 3620018016. Its totient is φ = 804448440.

The previous prime is 2011121107. The next prime is 2011121113. The reversal of 2011121110 is 111211102.

It is an interprime number because it is at equal distance from previous prime (2011121107) and next prime (2011121113).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 201112111 = 2011121110 / (2 + 0 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011121113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100556046 + ... + 100556065.

It is an arithmetic number, because the mean of its divisors is an integer number (452502252).

Almost surely, 2^2011121110 is an apocalyptic number.

2011121110 is a deficient number, since it is larger than the sum of its proper divisors (1608896906).

2011121110 is a wasteful number, since it uses less digits than its factorization.

2011121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201112118.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 2011121110 is about 44845.5249718408. The cubic root of 2011121110 is about 1262.2520214848.

Adding to 2011121110 its reverse (111211102), we get a palindrome (2122332212).

The spelling of 2011121110 in words is "two billion, eleven million, one hundred twenty-one thousand, one hundred ten".