21200120110002 has 32 divisors (see below), whose sum is σ = 42660877617792. Its totient is φ = 7023280518144.

The previous prime is 21200120109989. The next prime is 21200120110019. The reversal of 21200120110002 is 20001102100212.

It is a super-2 number, since 2×21200120110002² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21200120110002.

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, 4680288 + ... + 8019060.

It is an arithmetic number, because the mean of its divisors is an integer number (1333152425556).

Almost surely, 2^{21200120110002} is an apocalyptic number.

21200120110002 is an abundant number, since it is smaller than the sum of its proper divisors (21460757507790).

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

21200120110002 is a wasteful number, since it uses less digits than its factorization.

21200120110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345282.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21200120110002 its reverse (20001102100212), we get a palindrome (41201222210214).

The spelling of 21200120110002 in words is "twenty-one trillion, two hundred billion, one hundred twenty million, one hundred ten thousand, two".