121023330440 has 32 divisors (see below), whose sum is σ = 273002535000. Its totient is φ = 48284880384.

The previous prime is 121023330437. The next prime is 121023330443. The reversal of 121023330440 is 44033320121.

It is an interprime number because it is at equal distance from previous prime (121023330437) and next prime (121023330443).

It can be written as a sum of positive squares in 4 ways, for example, as 68232753796 + 52790576644 = 261214^2 + 229762^2 .

It is not an unprimeable number, because it can be changed into a prime (121023330443) 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 7 ways as a sum of consecutive naturals, for example, 3873365 + ... + 3904484.

Almost surely, 2^121023330440 is an apocalyptic number.

121023330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121023330440 is an abundant number, since it is smaller than the sum of its proper divisors (151979204560).

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

121023330440 is a wasteful number, since it uses less digits than its factorization.

121023330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778249 (or 7778245 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 121023330440 its reverse (44033320121), we get a palindrome (165056650561).

The spelling of 121023330440 in words is "one hundred twenty-one billion, twenty-three million, three hundred thirty thousand, four hundred forty".