101111001222 has 128 divisors (see below), whose sum is σ = 257694732288. Its totient is φ = 25688304000.

The previous prime is 101111001151. The next prime is 101111001223. The reversal of 101111001222 is 222100111101.

101111001222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 101111001198 and 101111001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111001223) 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 63 ways as a sum of consecutive naturals, for example, 3859893 + ... + 3885999.

It is an arithmetic number, because the mean of its divisors is an integer number (2013240096).

Almost surely, 2^101111001222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101111001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128847366144).

101111001222 is an abundant number, since it is smaller than the sum of its proper divisors (156583731066).

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

101111001222 is a wasteful number, since it uses less digits than its factorization.

101111001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26314.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101111001222 its reverse (222100111101), we get a palindrome (323211112323).

The spelling of 101111001222 in words is "one hundred one billion, one hundred eleven million, one thousand, two hundred twenty-two".