121022136 has 96 divisors (see below), whose sum is σ = 345720960. Its totient is φ = 38170176.

The previous prime is 121022129. The next prime is 121022141. The reversal of 121022136 is 631220121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176851 + ... + 177533.

It is an arithmetic number, because the mean of its divisors is an integer number (3601260).

Almost surely, 2^121022136 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 121022136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172860480).

121022136 is an abundant number, since it is smaller than the sum of its proper divisors (224698824).

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

121022136 is a wasteful number, since it uses less digits than its factorization.

121022136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121022136 is about 11001.0061358041. The cubic root of 121022136 is about 494.6389040813.

Adding to 121022136 its reverse (631220121), we get a palindrome (752242257).

The spelling of 121022136 in words is "one hundred twenty-one million, twenty-two thousand, one hundred thirty-six".