2102122122111 has 32 divisors (see below), whose sum is σ = 3480231767040. Its totient is φ = 1242939902400.

The previous prime is 2102122122103. The next prime is 2102122122179. The reversal of 2102122122111 is 1112212212012.

2102122122111 is a `hidden beast` number, since 210 + 2 + 1 + 221 + 221 + 11 = 666.

It is not a de Polignac number, because 2102122122111 - 2³ = 2102122122103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102122122101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86303095 + ... + 86327448.

It is an arithmetic number, because the mean of its divisors is an integer number (108757242720).

Almost surely, 2^{2102122122111} is an apocalyptic number.

2102122122111 is a deficient number, since it is larger than the sum of its proper divisors (1378109644929).

2102122122111 is a wasteful number, since it uses less digits than its factorization.

2102122122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172630604 (or 172630598 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2102122122111 its reverse (1112212212012), we get a palindrome (3214334334123).

The spelling of 2102122122111 in words is "two trillion, one hundred two billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".