121233231340 has 48 divisors (see below), whose sum is σ = 281583735552. Its totient is φ = 43553223936.

The previous prime is 121233231313. The next prime is 121233231349. The reversal of 121233231340 is 43132332121.

It is a super-2 number, since 2×121233231340² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121233231349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6291484 + ... + 6310723.

It is an arithmetic number, because the mean of its divisors is an integer number (5866327824).

Almost surely, 2^121233231340 is an apocalyptic number.

121233231340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121233231340 is an abundant number, since it is smaller than the sum of its proper divisors (160350504212).

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

121233231340 is a wasteful number, since it uses less digits than its factorization.

121233231340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12602266 (or 12602264 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 121233231340 its reverse (43132332121), we get a palindrome (164365563461).

The spelling of 121233231340 in words is "one hundred twenty-one billion, two hundred thirty-three million, two hundred thirty-one thousand, three hundred forty".