21101200320330 has 96 divisors (see below), whose sum is σ = 61271633614464. Its totient is φ = 5194141609536.

The previous prime is 21101200320293. The next prime is 21101200320377. The reversal of 21101200320330 is 3302300210112.

21101200320330 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 12 + 0 + 0 + 320 + 330 = 666.

It is a super-2 number, since 2×21101200320330² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 333953854 + ... + 334017033.

It is an arithmetic number, because the mean of its divisors is an integer number (638246183484).

Almost surely, 2^{21101200320330} is an apocalyptic number.

21101200320330 is an abundant number, since it is smaller than the sum of its proper divisors (40170433294134).

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

21101200320330 is a wasteful number, since it uses less digits than its factorization.

21101200320330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667970922 (or 667970910 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21101200320330 its reverse (3302300210112), we get a palindrome (24403500530442).

The spelling of 21101200320330 in words is "twenty-one trillion, one hundred one billion, two hundred million, three hundred twenty thousand, three hundred thirty".