2102012112111 has 16 divisors (see below), whose sum is σ = 2823235795200. Its totient is φ = 1391065610688.

The previous prime is 2102012112107. The next prime is 2102012112139. The reversal of 2102012112111 is 1112112102012.

It is a happy number.

It is not a de Polignac number, because 2102012112111 - 2² = 2102012112107 is a prime.

It is a super-2 number, since 2×2102012112111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102012112181) 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, 15500760 + ... + 15635778.

It is an arithmetic number, because the mean of its divisors is an integer number (176452237200).

Almost surely, 2^{2102012112111} is an apocalyptic number.

2102012112111 is a deficient number, since it is larger than the sum of its proper divisors (721223683089).

2102012112111 is a wasteful number, since it uses less digits than its factorization.

2102012112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173038.

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

Adding to 2102012112111 its reverse (1112112102012), we get a palindrome (3214124214123).

The spelling of 2102012112111 in words is "two trillion, one hundred two billion, twelve million, one hundred twelve thousand, one hundred eleven".