999922555881111 has 16 divisors (see below), whose sum is σ = 1339107030537984. Its totient is φ = 663676575449664.

The previous prime is 999922555880999. The next prime is 999922555881127. The reversal of 999922555881111 is 111188555229999.

It is a de Polignac number, because none of the positive numbers 2^k-999922555881111 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999922555881191) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272116035 + ... + 275766171.

It is an arithmetic number, because the mean of its divisors is an integer number (83694189408624).

Almost surely, 2^{999922555881111} is an apocalyptic number.

999922555881111 is a deficient number, since it is larger than the sum of its proper divisors (339184474656873).

999922555881111 is a wasteful number, since it uses less digits than its factorization.

999922555881111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052630.

The product of its digits is 209952000, while the sum is 75.

The spelling of 999922555881111 in words is "nine hundred ninety-nine trillion, nine hundred twenty-two billion, five hundred fifty-five million, eight hundred eighty-one thousand, one hundred eleven".