210021100222222 has 16 divisors (see below), whose sum is σ = 320315446682352. Its totient is φ = 103250567920320.

The previous prime is 210021100222217. The next prime is 210021100222229. The reversal of 210021100222222 is 222222001120012.

It is a self number, because there is not a number n which added to its sum of digits gives 210021100222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021100222229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320486023 + ... + 321140674.

It is an arithmetic number, because the mean of its divisors is an integer number (20019715417647).

Almost surely, 2^{210021100222222} is an apocalyptic number.

210021100222222 is a deficient number, since it is larger than the sum of its proper divisors (110294346460130).

210021100222222 is a wasteful number, since it uses less digits than its factorization.

210021100222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641629443.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 210021100222222 its reverse (222222001120012), we get a palindrome (432243101342234).

The spelling of 210021100222222 in words is "two hundred ten trillion, twenty-one billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-two".