121122756 has 96 divisors (see below), whose sum is σ = 341671680. Its totient is φ = 36951552.

The previous prime is 121122751. The next prime is 121122791. The reversal of 121122756 is 657221121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121122751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67041 + ... + 68823.

It is an arithmetic number, because the mean of its divisors is an integer number (3559080).

Almost surely, 2^121122756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170835840).

121122756 is an abundant number, since it is smaller than the sum of its proper divisors (220548924).

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

121122756 is a wasteful number, since it uses less digits than its factorization.

121122756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850 (or 1842 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 121122756 is about 11005.5784037006. The cubic root of 121122756 is about 494.7759500277.

Adding to 121122756 its reverse (657221121), we get a palindrome (778343877).

The spelling of 121122756 in words is "one hundred twenty-one million, one hundred twenty-two thousand, seven hundred fifty-six".