21200200212210 has 32 divisors (see below), whose sum is σ = 50881200777792. Its totient is φ = 5653306693440.

The previous prime is 21200200212197. The next prime is 21200200212239. The reversal of 21200200212210 is 1221200200212.

It is a super-4 number, since 4×21200200212210⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21200200212210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2831881 + ... + 7100700.

It is an arithmetic number, because the mean of its divisors is an integer number (1590037524306).

Almost surely, 2^{21200200212210} is an apocalyptic number.

21200200212210 is an abundant number, since it is smaller than the sum of its proper divisors (29681000565582).

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

21200200212210 is a wasteful number, since it uses less digits than its factorization.

21200200212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003738.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21200200212210 its reverse (1221200200212), we get a palindrome (22421400412422).

The spelling of 21200200212210 in words is "twenty-one trillion, two hundred billion, two hundred million, two hundred twelve thousand, two hundred ten".