2121020119 has 2 divisors, whose sum is σ = 2121020120. Its totient is φ = 2121020118.

The previous prime is 2121020117. The next prime is 2121020137. The reversal of 2121020119 is 9110201212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121020119 - 2¹ = 2121020117 is a prime.

It is a super-2 number, since 2×2121020119² = 8997452690405548322, which contains 22 as substring.

Together with 2121020117, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2121020096 and 2121020105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121020117) 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, 1060510059 + 1060510060.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510060).

Almost surely, 2^2121020119 is an apocalyptic number.

2121020119 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121020119 is an equidigital number, since it uses as much as digits as its factorization.

2121020119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2121020119 is about 46054.5341850289. The cubic root of 2121020119 is about 1284.8376745400.

It can be divided in two parts, 2 and 121020119, that added together give a palindrome (121020121).

The spelling of 2121020119 in words is "two billion, one hundred twenty-one million, twenty thousand, one hundred nineteen".