21211110200222 has 16 divisors (see below), whose sum is σ = 32496145572672. Its totient is φ = 10379096814240.

The previous prime is 21211110200173. The next prime is 21211110200233. The reversal of 21211110200222 is 22200201111212.

It is a super-2 number, since 2×21211110200222² (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 21211110200222.

It is a congruent number.

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, 7569929 + ... + 9986292.

It is an arithmetic number, because the mean of its divisors is an integer number (2031009098292).

Almost surely, 2^{21211110200222} is an apocalyptic number.

21211110200222 is a deficient number, since it is larger than the sum of its proper divisors (11285035372450).

21211110200222 is a wasteful number, since it uses less digits than its factorization.

21211110200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17569123.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211110200222 its reverse (22200201111212), we get a palindrome (43411311311434).

The spelling of 21211110200222 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, two hundred thousand, two hundred twenty-two".