222121502120009 has 2 divisors, whose sum is σ = 222121502120010. Its totient is φ = 222121502120008.

The previous prime is 222121502119987. The next prime is 222121502120051. The reversal of 222121502120009 is 900021205121222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194277517092409 + 27843985027600 = 13938347^2 + 5276740^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121502120009 - 2⁴⁴ = 204529316075593 is a prime.

It is not a weakly prime, because it can be changed into another prime (222121522120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060751060004 + 111060751060005.

It is an arithmetic number, because the mean of its divisors is an integer number (111060751060005).

Almost surely, 2^{222121502120009} is an apocalyptic number.

It is an amenable number.

222121502120009 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121502120009 is an equidigital number, since it uses as much as digits as its factorization.

222121502120009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 222121502120009 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, five hundred two million, one hundred twenty thousand, nine".