222121123099 has 2 divisors, whose sum is σ = 222121123100. Its totient is φ = 222121123098.

The previous prime is 222121123097. The next prime is 222121123153. The reversal of 222121123099 is 990321121222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222121123099 - 2¹ = 222121123097 is a prime.

It is a super-2 number, since 2×222121123099² (a number of 23 digits) contains 22 as substring.

Together with 222121123097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (222121123097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060561549 + 111060561550.

It is an arithmetic number, because the mean of its divisors is an integer number (111060561550).

Almost surely, 2^222121123099 is an apocalyptic number.

222121123099 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121123099 is an equidigital number, since it uses as much as digits as its factorization.

222121123099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 222121123099 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-three thousand, ninety-nine".