2112211949 has 2 divisors, whose sum is σ = 2112211950. Its totient is φ = 2112211948.

The previous prime is 2112211853. The next prime is 2112211951. The reversal of 2112211949 is 9491122112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1987554724 + 124657225 = 44582^2 + 11165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112211949 is a prime.

It is a super-2 number, since 2×2112211949² = 8922878634996757202, which contains 22 as substring.

Together with 2112211951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112211249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056105974 + 1056105975.

It is an arithmetic number, because the mean of its divisors is an integer number (1056105975).

Almost surely, 2^2112211949 is an apocalyptic number.

It is an amenable number.

2112211949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112211949 is an equidigital number, since it uses as much as digits as its factorization.

2112211949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 2112211949 is about 45958.8070885222. The cubic root of 2112211949 is about 1283.0566493565.

The spelling of 2112211949 in words is "two billion, one hundred twelve million, two hundred eleven thousand, nine hundred forty-nine".