121345356 has 48 divisors (see below), whose sum is σ = 310560768. Its totient is φ = 36571200.

The previous prime is 121345349. The next prime is 121345369. The reversal of 121345356 is 653543121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22806 + ... + 27618.

It is an arithmetic number, because the mean of its divisors is an integer number (6470016).

Almost surely, 2^121345356 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 121345356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155280384).

121345356 is an abundant number, since it is smaller than the sum of its proper divisors (189215412).

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

121345356 is a wasteful number, since it uses less digits than its factorization.

121345356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022 (or 5020 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 121345356 is about 11015.6868147202. The cubic root of 121345356 is about 495.0788650998.

Adding to 121345356 its reverse (653543121), we get a palindrome (774888477).

The spelling of 121345356 in words is "one hundred twenty-one million, three hundred forty-five thousand, three hundred fifty-six".