121217364 has 48 divisors (see below), whose sum is σ = 316391040. Its totient is φ = 40132800.

The previous prime is 121217353. The next prime is 121217381. The reversal of 121217364 is 463712121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12592 + ... + 20024.

It is an arithmetic number, because the mean of its divisors is an integer number (6591480).

Almost surely, 2^121217364 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 121217364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158195520).

121217364 is an abundant number, since it is smaller than the sum of its proper divisors (195173676).

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

121217364 is a wasteful number, since it uses less digits than its factorization.

121217364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597 (or 7589 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 121217364 is about 11009.8757486177. The cubic root of 121217364 is about 494.9047383258.

Adding to 121217364 its reverse (463712121), we get a palindrome (584929485).

The spelling of 121217364 in words is "one hundred twenty-one million, two hundred seventeen thousand, three hundred sixty-four".