2111022120111 has 16 divisors (see below), whose sum is σ = 2880430696704. Its totient is φ = 1374487095744.

The previous prime is 2111022120037. The next prime is 2111022120127. The reversal of 2111022120111 is 1110212201112.

It is a happy number.

It is not a de Polignac number, because 2111022120111 - 2²¹ = 2111020022959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111022120611) 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, 572595 + ... + 2133051.

It is an arithmetic number, because the mean of its divisors is an integer number (180026918544).

Almost surely, 2^{2111022120111} is an apocalyptic number.

2111022120111 is a deficient number, since it is larger than the sum of its proper divisors (769408576593).

2111022120111 is a wasteful number, since it uses less digits than its factorization.

2111022120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570990.

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

Adding to 2111022120111 its reverse (1110212201112), we get a palindrome (3221234321223).

The spelling of 2111022120111 in words is "two trillion, one hundred eleven billion, twenty-two million, one hundred twenty thousand, one hundred eleven".