121352030440 has 32 divisors (see below), whose sum is σ = 276109965000. Its totient is φ = 47995408384.

The previous prime is 121352030431. The next prime is 121352030441. The reversal of 121352030440 is 44030253121.

It can be written as a sum of positive squares in 4 ways, for example, as 72547267716 + 48804762724 = 269346^2 + 220918^2 .

It is not an unprimeable number, because it can be changed into a prime (121352030441) 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 7 ways as a sum of consecutive naturals, for example, 17040265 + ... + 17047384.

Almost surely, 2^121352030440 is an apocalyptic number.

121352030440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121352030440 is an abundant number, since it is smaller than the sum of its proper divisors (154757934560).

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

121352030440 is a wasteful number, since it uses less digits than its factorization.

121352030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34087749 (or 34087745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 121352030440 its reverse (44030253121), we get a palindrome (165382283561).

The spelling of 121352030440 in words is "one hundred twenty-one billion, three hundred fifty-two million, thirty thousand, four hundred forty".