2011210120111 has 4 divisors (see below), whose sum is σ = 2029008439872. Its totient is φ = 1993411800352.

The previous prime is 2011210120093. The next prime is 2011210120151. The reversal of 2011210120111 is 1110210121102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2011210120111 - 2⁹ = 2011210119599 is a prime.

It is a super-2 number, since 2×2011210120111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011210120091 and 2011210120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011210120151) 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, 8899159711 + ... + 8899159936.

It is an arithmetic number, because the mean of its divisors is an integer number (507252109968).

Almost surely, 2^{2011210120111} is an apocalyptic number.

2011210120111 is a deficient number, since it is larger than the sum of its proper divisors (17798319761).

2011210120111 is a wasteful number, since it uses less digits than its factorization.

2011210120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17798319760.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2011210120111 its reverse (1110210121102), we get a palindrome (3121420241213).

Subtracting from 2011210120111 its reverse (1110210121102), we obtain a palindrome (900999999009).

The spelling of 2011210120111 in words is "two trillion, eleven billion, two hundred ten million, one hundred twenty thousand, one hundred eleven".