2112211001291 has 2 divisors, whose sum is σ = 2112211001292. Its totient is φ = 2112211001290.

The previous prime is 2112211001287. The next prime is 2112211001297. The reversal of 2112211001291 is 1921001122112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2112211001291 - 2² = 2112211001287 is a prime.

It is a super-2 number, since 2×2112211001291² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112211001297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056105500645 + 1056105500646.

It is an arithmetic number, because the mean of its divisors is an integer number (1056105500646).

Almost surely, 2^{2112211001291} is an apocalyptic number.

2112211001291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112211001291 is an equidigital number, since it uses as much as digits as its factorization.

2112211001291 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 2112211001291 in words is "two trillion, one hundred twelve billion, two hundred eleven million, one thousand, two hundred ninety-one".