12221100019 has 2 divisors, whose sum is σ = 12221100020. Its totient is φ = 12221100018.

The previous prime is 12221100011. The next prime is 12221100041. The reversal of 12221100019 is 91000112221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221100019 - 2³ = 12221100011 is a prime.

It is a super-2 number, since 2×12221100019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12221099969 and 12221100005.

It is not a weakly prime, because it can be changed into another prime (12221100011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110550009 + 6110550010.

It is an arithmetic number, because the mean of its divisors is an integer number (6110550010).

Almost surely, 2^12221100019 is an apocalyptic number.

12221100019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221100019 is an equidigital number, since it uses as much as digits as its factorization.

12221100019 is an evil number, because the sum of its binary digits is even.

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

The spelling of 12221100019 in words is "twelve billion, two hundred twenty-one million, one hundred thousand, nineteen".