20132221019 has 2 divisors, whose sum is σ = 20132221020. Its totient is φ = 20132221018.

The previous prime is 20132221009. The next prime is 20132221033. The reversal of 20132221019 is 91012223102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20132221019 - 2³² = 15837253723 is a prime.

It is a super-2 number, since 2×20132221019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20132220985 and 20132221003.

It is not a weakly prime, because it can be changed into another prime (20132221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066110509 + 10066110510.

It is an arithmetic number, because the mean of its divisors is an integer number (10066110510).

Almost surely, 2^20132221019 is an apocalyptic number.

20132221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132221019 is an equidigital number, since it uses as much as digits as its factorization.

20132221019 is an evil number, because the sum of its binary digits is even.

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

The spelling of 20132221019 in words is "twenty billion, one hundred thirty-two million, two hundred twenty-one thousand, nineteen".