2102211221959 has 2 divisors, whose sum is σ = 2102211221960. Its totient is φ = 2102211221958.

The previous prime is 2102211221947. The next prime is 2102211222017. The reversal of 2102211221959 is 9591221122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102211221959 - 2³⁹ = 1552455408071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102211224959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051105610979 + 1051105610980.

It is an arithmetic number, because the mean of its divisors is an integer number (1051105610980).

Almost surely, 2^{2102211221959} is an apocalyptic number.

2102211221959 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102211221959 is an equidigital number, since it uses as much as digits as its factorization.

2102211221959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 2102211221959 in words is "two trillion, one hundred two billion, two hundred eleven million, two hundred twenty-one thousand, nine hundred fifty-nine".