2221212212099 has 2 divisors, whose sum is σ = 2221212212100. Its totient is φ = 2221212212098.

The previous prime is 2221212212083. The next prime is 2221212212123. The reversal of 2221212212099 is 9902122121222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221212212099 - 2⁴ = 2221212212083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221212212399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110606106049 + 1110606106050.

It is an arithmetic number, because the mean of its divisors is an integer number (1110606106050).

Almost surely, 2^{2221212212099} is an apocalyptic number.

2221212212099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221212212099 is an equidigital number, since it uses as much as digits as its factorization.

2221212212099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 2221212212099 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand, ninety-nine".