21020122233120 has 96 divisors (see below), whose sum is σ = 66315725094528. Its totient is φ = 5596702220288.

The previous prime is 21020122233041. The next prime is 21020122233137. The reversal of 21020122233120 is 2133222102012.

It is a tau number, because it is divible by the number of its divisors (96).

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 15 ways as a sum of consecutive naturals, for example, 33531729 + ... + 34152848.

It is an arithmetic number, because the mean of its divisors is an integer number (690788803068).

Almost surely, 2^{21020122233120} is an apocalyptic number.

21020122233120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020122233120 is an abundant number, since it is smaller than the sum of its proper divisors (45295602861408).

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

21020122233120 is a wasteful number, since it uses less digits than its factorization.

21020122233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67685242 (or 67685234 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21020122233120 its reverse (2133222102012), we get a palindrome (23153344335132).

The spelling of 21020122233120 in words is "twenty-one trillion, twenty billion, one hundred twenty-two million, two hundred thirty-three thousand, one hundred twenty".