21032303105440 has 96 divisors (see below), whose sum is σ = 57394568395584. Its totient is φ = 7198221373440.

The previous prime is 21032303105431. The next prime is 21032303105449. The reversal of 21032303105440 is 4450130323012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21032303105431) and next prime (21032303105449).

It is a junction number, because it is equal to n+sod(n) for n = 21032303105399 and 21032303105408.

It is not an unprimeable number, because it can be changed into a prime (21032303105449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351445734 + ... + 351505573.

It is an arithmetic number, because the mean of its divisors is an integer number (597860087454).

Almost surely, 2^{21032303105440} is an apocalyptic number.

21032303105440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032303105440 is an abundant number, since it is smaller than the sum of its proper divisors (36362265290144).

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

21032303105440 is a wasteful number, since it uses less digits than its factorization.

21032303105440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702951350 (or 702951342 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21032303105440 its reverse (4450130323012), we get a palindrome (25482433428452).

The spelling of 21032303105440 in words is "twenty-one trillion, thirty-two billion, three hundred three million, one hundred five thousand, four hundred forty".