21133100220210 has 48 divisors (see below), whose sum is σ = 59941156991040. Its totient is φ = 5123175810720.

The previous prime is 21133100220203. The next prime is 21133100220223. The reversal of 21133100220210 is 1202200133112.

21133100220210 is a `hidden beast` number, since 2 + 1 + 133 + 100 + 220 + 210 = 666.

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 23 ways as a sum of consecutive naturals, for example, 10673281950 + ... + 10673283929.

It is an arithmetic number, because the mean of its divisors is an integer number (1248774103980).

Almost surely, 2^{21133100220210} is an apocalyptic number.

21133100220210 is an abundant number, since it is smaller than the sum of its proper divisors (38808056770830).

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

21133100220210 is a wasteful number, since it uses less digits than its factorization.

21133100220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346565903 (or 21346565900 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21133100220210 its reverse (1202200133112), we get a palindrome (22335300353322).

The spelling of 21133100220210 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred million, two hundred twenty thousand, two hundred ten".