2120112021111 has 64 divisors (see below), whose sum is σ = 3277012992000. Its totient is φ = 1194244560000.

The previous prime is 2120112021107. The next prime is 2120112021119. The reversal of 2120112021111 is 1111202110212.

It is a happy number.

It is not a de Polignac number, because 2120112021111 - 2² = 2120112021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120112021119) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 831089286 + ... + 831091836.

It is an arithmetic number, because the mean of its divisors is an integer number (51203328000).

Almost surely, 2^{2120112021111} is an apocalyptic number.

2120112021111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2120112021111 is a deficient number, since it is larger than the sum of its proper divisors (1156900970889).

2120112021111 is a wasteful number, since it uses less digits than its factorization.

2120112021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2120112021111 its reverse (1111202110212), we get a palindrome (3231314131323).

The spelling of 2120112021111 in words is "two trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, one hundred eleven".