21200220010010 has 16 divisors (see below), whose sum is σ = 38620159826976. Its totient is φ = 8377918268688.

The previous prime is 21200220009973. The next prime is 21200220010027. The reversal of 21200220010010 is 1001002200212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200220009973 and 21200220010000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12771216044 + ... + 12771217703.

It is an arithmetic number, because the mean of its divisors is an integer number (2413759989186).

Almost surely, 2^{21200220010010} is an apocalyptic number.

21200220010010 is a deficient number, since it is larger than the sum of its proper divisors (17419939816966).

21200220010010 is a wasteful number, since it uses less digits than its factorization.

21200220010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25542433837.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200220010010 its reverse (1001002200212), we get a palindrome (22201222210222).

The spelling of 21200220010010 in words is "twenty-one trillion, two hundred billion, two hundred twenty million, ten thousand, ten".