21210211000222 has 16 divisors (see below), whose sum is σ = 31920281070480. Its totient is φ = 10570126955968.

The previous prime is 21210211000207. The next prime is 21210211000283. The reversal of 21210211000222 is 22200011201212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21210211000196 and 21210211000205.

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, 1996554 + ... + 6812242.

It is an arithmetic number, because the mean of its divisors is an integer number (1995017566905).

Almost surely, 2^{21210211000222} is an apocalyptic number.

21210211000222 is a deficient number, since it is larger than the sum of its proper divisors (10710070070258).

21210211000222 is a wasteful number, since it uses less digits than its factorization.

21210211000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822955.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210211000222 its reverse (22200011201212), we get a palindrome (43410222201434).

The spelling of 21210211000222 in words is "twenty-one trillion, two hundred ten billion, two hundred eleven million, two hundred twenty-two", and thus it is an aban number.