121302300440 has 32 divisors (see below), whose sum is σ = 272950264080. Its totient is φ = 48517348992.

The previous prime is 121302300439. The next prime is 121302300479. The reversal of 121302300440 is 44003203121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476987 + ... + 685653.

Almost surely, 2^121302300440 is an apocalyptic number.

121302300440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121302300440 is an abundant number, since it is smaller than the sum of its proper divisors (151647963640).

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

121302300440 is a wasteful number, since it uses less digits than its factorization.

121302300440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223211 (or 223207 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 121302300440 its reverse (44003203121), we get a palindrome (165305503561).

The spelling of 121302300440 in words is "one hundred twenty-one billion, three hundred two million, three hundred thousand, four hundred forty".