1210111122 has 96 divisors (see below), whose sum is σ = 2771677440. Its totient is φ = 349197120.

The previous prime is 1210111109. The next prime is 1210111127. The reversal of 1210111122 is 2211110121.

It is a junction number, because it is equal to n+sod(n) for n = 1210111098 and 1210111107.

It is not an unprimeable number, because it can be changed into a prime (1210111127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5330773 + ... + 5330999.

It is an arithmetic number, because the mean of its divisors is an integer number (28871640).

Almost surely, 2^1210111122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210111122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1385838720).

1210111122 is an abundant number, since it is smaller than the sum of its proper divisors (1561566318).

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

1210111122 is a wasteful number, since it uses less digits than its factorization.

1210111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 339 counting only the distinct ones).

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

The square root of 1210111122 is about 34786.6514916282. The cubic root of 1210111122 is about 1065.6348561129.

Adding to 1210111122 its reverse (2211110121), we get a palindrome (3421221243).

The spelling of 1210111122 in words is "one billion, two hundred ten million, one hundred eleven thousand, one hundred twenty-two".