2211319991 has 2 divisors, whose sum is σ = 2211319992. Its totient is φ = 2211319990.

The previous prime is 2211319973. The next prime is 2211320009. The reversal of 2211319991 is 1999131122.

It is a balanced prime because it is at equal distance from previous prime (2211319973) and next prime (2211320009).

It is a cyclic number.

It is not a de Polignac number, because 2211319991 - 2⁶ = 2211319927 is a prime.

It is a super-2 number, since 2×2211319991² = 9779872205192480162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211319091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105659995 + 1105659996.

It is an arithmetic number, because the mean of its divisors is an integer number (1105659996).

Almost surely, 2^2211319991 is an apocalyptic number.

2211319991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211319991 is an equidigital number, since it uses as much as digits as its factorization.

2211319991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 38.

The square root of 2211319991 is about 47024.6742785104. The cubic root of 2211319991 is about 1302.8183413661.

The spelling of 2211319991 in words is "two billion, two hundred eleven million, three hundred nineteen thousand, nine hundred ninety-one".