21334210303420 has 96 divisors (see below), whose sum is σ = 54900246804480. Its totient is φ = 6797173294080.

The previous prime is 21334210303361. The next prime is 21334210303433. The reversal of 21334210303420 is 2430301243312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56545866 + ... + 56921905.

It is an arithmetic number, because the mean of its divisors is an integer number (571877570880).

Almost surely, 2^{21334210303420} is an apocalyptic number.

21334210303420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334210303420 is an abundant number, since it is smaller than the sum of its proper divisors (33566036501060).

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

21334210303420 is a wasteful number, since it uses less digits than its factorization.

21334210303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113467883 (or 113467881 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21334210303420 its reverse (2430301243312), we get a palindrome (23764511546732).

The spelling of 21334210303420 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, three hundred three thousand, four hundred twenty".