21200000022210 has 16 divisors (see below), whose sum is σ = 50880000053376. Its totient is φ = 5653333339248.

The previous prime is 21200000022209. The next prime is 21200000022287. The reversal of 21200000022210 is 1222000000212.

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, 353333333674 + ... + 353333333733.

It is an arithmetic number, because the mean of its divisors is an integer number (3180000003336).

Almost surely, 2^{21200000022210} is an apocalyptic number.

21200000022210 is an abundant number, since it is smaller than the sum of its proper divisors (29680000031166).

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

21200000022210 is a wasteful number, since it uses less digits than its factorization.

21200000022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706666667417.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21200000022210 its reverse (1222000000212), we get a palindrome (22422000022422).

The spelling of 21200000022210 in words is "twenty-one trillion, two hundred billion, twenty-two thousand, two hundred ten".