2121222919 has 2 divisors, whose sum is σ = 2121222920. Its totient is φ = 2121222918.

The previous prime is 2121222877. The next prime is 2121222931. The reversal of 2121222919 is 9192221212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121222919 - 2⁷ = 2121222791 is a prime.

It is a super-2 number, since 2×2121222919² = 8999173344181761122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121222959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060611459 + 1060611460.

It is an arithmetic number, because the mean of its divisors is an integer number (1060611460).

Almost surely, 2^2121222919 is an apocalyptic number.

2121222919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121222919 is an equidigital number, since it uses as much as digits as its factorization.

2121222919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 31.

The square root of 2121222919 is about 46056.7358700115. The cubic root of 2121222919 is about 1284.8786228827.

The spelling of 2121222919 in words is "two billion, one hundred twenty-one million, two hundred twenty-two thousand, nine hundred nineteen".