1100111212122 has 32 divisors (see below), whose sum is σ = 2373298307520. Its totient is φ = 337948899840.

The previous prime is 1100111212121. The next prime is 1100111212127. The reversal of 1100111212122 is 2212121110011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1100111212121) 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 in 15 ways as a sum of consecutive naturals, for example, 11344279 + ... + 11440842.

It is an arithmetic number, because the mean of its divisors is an integer number (74165572110).

Almost surely, 2^{1100111212122} is an apocalyptic number.

1100111212122 is an abundant number, since it is smaller than the sum of its proper divisors (1273187095398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100111212122 is a wasteful number, since it uses less digits than its factorization.

1100111212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22785758.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1100111212122 its reverse (2212121110011), we get a palindrome (3312232322133).

The spelling of 1100111212122 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".