42222221999 has 2 divisors, whose sum is σ = 42222222000. Its totient is φ = 42222221998.

The previous prime is 42222221869. The next prime is 42222222089. The reversal of 42222221999 is 99912222224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42222221999 - 2¹² = 42222217903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42222221399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111110999 + 21111111000.

It is an arithmetic number, because the mean of its divisors is an integer number (21111111000).

Almost surely, 2^42222221999 is an apocalyptic number.

42222221999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222221999 is an equidigital number, since it uses as much as digits as its factorization.

42222221999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The spelling of 42222221999 in words is "forty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-nine".