11111110221122 has 8 divisors (see below), whose sum is σ = 16707415125900. Its totient is φ = 5541971845824.

The previous prime is 11111110221091. The next prime is 11111110221131. The reversal of 11111110221122 is 22112201111111.

It can be written as a sum of positive squares in 2 ways, for example, as 10942328110561 + 168782110561 = 3307919^2 + 410831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11111110221122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6791631347 + ... + 6791632982.

Almost surely, 2^{11111110221122} is an apocalyptic number.

11111110221122 is a deficient number, since it is larger than the sum of its proper divisors (5596304904778).

11111110221122 is a wasteful number, since it uses less digits than its factorization.

11111110221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583264740.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11111110221122 its reverse (22112201111111), we get a palindrome (33223311332233).

The spelling of 11111110221122 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-two".