21213801003330 has 96 divisors (see below), whose sum is σ = 59402471192064. Its totient is φ = 5221522147968.

The previous prime is 21213801003319. The next prime is 21213801003389. The reversal of 21213801003330 is 3330010831212.

21213801003330 is a `hidden beast` number, since 2 + 121 + 380 + 100 + 33 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21213801003294 and 21213801003303.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17824147 + ... + 18977033.

It is an arithmetic number, because the mean of its divisors is an integer number (618775741584).

Almost surely, 2^{21213801003330} is an apocalyptic number.

21213801003330 is an abundant number, since it is smaller than the sum of its proper divisors (38188670188734).

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

21213801003330 is a wasteful number, since it uses less digits than its factorization.

21213801003330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168640 (or 1168637 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21213801003330 its reverse (3330010831212), we get a palindrome (24543811834542).

The spelling of 21213801003330 in words is "twenty-one trillion, two hundred thirteen billion, eight hundred one million, three thousand, three hundred thirty".