11101212122 has 128 divisors (see below), whose sum is σ = 23357859840. Its totient is φ = 3816610560.

The previous prime is 11101212119. The next prime is 11101212181. The reversal of 11101212122 is 22121210111.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11101212097 and 11101212106.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 6211313 + ... + 6213099.

It is an arithmetic number, because the mean of its divisors is an integer number (182483280).

Almost surely, 2^11101212122 is an apocalyptic number.

11101212122 is an abundant number, since it is smaller than the sum of its proper divisors (12256647718).

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

11101212122 is a wasteful number, since it uses less digits than its factorization.

11101212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11101212122 its reverse (22121210111), we get a palindrome (33222422233).

The spelling of 11101212122 in words is "eleven billion, one hundred one million, two hundred twelve thousand, one hundred twenty-two".