2100111211229 has 2 divisors, whose sum is σ = 2100111211230. Its totient is φ = 2100111211228.

The previous prime is 2100111211207. The next prime is 2100111211243. The reversal of 2100111211229 is 9221121110012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229625943225 + 870485268004 = 1108885^2 + 932998^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100111211229 - 2⁸ = 2100111210973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100111217229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050055605614 + 1050055605615.

It is an arithmetic number, because the mean of its divisors is an integer number (1050055605615).

Almost surely, 2^{2100111211229} is an apocalyptic number.

It is an amenable number.

2100111211229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100111211229 is an equidigital number, since it uses as much as digits as its factorization.

2100111211229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 2100111211229 in words is "two trillion, one hundred billion, one hundred eleven million, two hundred eleven thousand, two hundred twenty-nine".