20122321019 has 2 divisors, whose sum is σ = 20122321020. Its totient is φ = 20122321018.

The previous prime is 20122320991. The next prime is 20122321103. The reversal of 20122321019 is 91012322102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20122321019 - 2⁸ = 20122320763 is a prime.

It is a super-2 number, since 2×20122321019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20122320985 and 20122321003.

It is not a weakly prime, because it can be changed into another prime (20122321319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061160509 + 10061160510.

It is an arithmetic number, because the mean of its divisors is an integer number (10061160510).

Almost surely, 2^20122321019 is an apocalyptic number.

20122321019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122321019 is an equidigital number, since it uses as much as digits as its factorization.

20122321019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 20122321019 in words is "twenty billion, one hundred twenty-two million, three hundred twenty-one thousand, nineteen".