2221121021299 has 2 divisors, whose sum is σ = 2221121021300. Its totient is φ = 2221121021298.

The previous prime is 2221121021057. The next prime is 2221121021321. The reversal of 2221121021299 is 9921201211222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221121021299 - 2²³ = 2221112632691 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221121021599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110560510649 + 1110560510650.

It is an arithmetic number, because the mean of its divisors is an integer number (1110560510650).

Almost surely, 2^{2221121021299} is an apocalyptic number.

2221121021299 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221121021299 is an equidigital number, since it uses as much as digits as its factorization.

2221121021299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 2221121021299 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty-one thousand, two hundred ninety-nine".