21210103343120 has 40 divisors (see below), whose sum is σ = 49313783715840. Its totient is φ = 8483990852480.

The previous prime is 21210103343101. The next prime is 21210103343131. The reversal of 21210103343120 is 2134330101212.

It is a tau number, because it is divible by the number of its divisors (40).

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, 14605271 + ... + 15991689.

It is an arithmetic number, because the mean of its divisors is an integer number (1232844592896).

Almost surely, 2^{21210103343120} is an apocalyptic number.

21210103343120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210103343120 is an abundant number, since it is smaller than the sum of its proper divisors (28103680372720).

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

21210103343120 is a wasteful number, since it uses less digits than its factorization.

21210103343120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577663 (or 1577657 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21210103343120 its reverse (2134330101212), we get a palindrome (23344433444332).

The spelling of 21210103343120 in words is "twenty-one trillion, two hundred ten billion, one hundred three million, three hundred forty-three thousand, one hundred twenty".