121121340 has 48 divisors (see below), whose sum is σ = 350085120. Its totient is φ = 31256640.

The previous prime is 121121317. The next prime is 121121347. The reversal of 121121340 is 43121121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121347) by changing a digit.

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, 30700 + ... + 34419.

It is an arithmetic number, because the mean of its divisors is an integer number (7293440).

Almost surely, 2^121121340 is an apocalyptic number.

121121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121340 is an abundant number, since it is smaller than the sum of its proper divisors (228963780).

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

121121340 is a wasteful number, since it uses less digits than its factorization.

121121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65162 (or 65160 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121121340 is about 11005.5140725002. The cubic root of 121121340 is about 494.7740219412.

Adding to 121121340 its reverse (43121121), we get a palindrome (164242461).

The spelling of 121121340 in words is "one hundred twenty-one million, one hundred twenty-one thousand, three hundred forty".