2100031102111 has 2 divisors, whose sum is σ = 2100031102112. Its totient is φ = 2100031102110.

The previous prime is 2100031102009. The next prime is 2100031102121. The reversal of 2100031102111 is 1112011300012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100031102111 - 2⁹ = 2100031101599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100031102091 and 2100031102100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100031102121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050015551055 + 1050015551056.

It is an arithmetic number, because the mean of its divisors is an integer number (1050015551056).

Almost surely, 2^{2100031102111} is an apocalyptic number.

2100031102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100031102111 is an equidigital number, since it uses as much as digits as its factorization.

2100031102111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 2100031102111 its reverse (1112011300012), we get a palindrome (3212042402123).

The spelling of 2100031102111 in words is "two trillion, one hundred billion, thirty-one million, one hundred two thousand, one hundred eleven".