210222200100021 has 16 divisors (see below), whose sum is σ = 282002311380288. Its totient is φ = 139297623696000.

The previous prime is 210222200100001. The next prime is 210222200100091. The reversal of 210222200100021 is 120001002222012.

It is not a de Polignac number, because 210222200100021 - 2¹³ = 210222200091829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222200100001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313738255 + ... + 314407596.

It is an arithmetic number, because the mean of its divisors is an integer number (17625144461268).

Almost surely, 2^{210222200100021} is an apocalyptic number.

It is an amenable number.

210222200100021 is a deficient number, since it is larger than the sum of its proper divisors (71780111280267).

210222200100021 is a wasteful number, since it uses less digits than its factorization.

210222200100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628146532.

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

Adding to 210222200100021 its reverse (120001002222012), we get a palindrome (330223202322033).

The spelling of 210222200100021 in words is "two hundred ten trillion, two hundred twenty-two billion, two hundred million, one hundred thousand, twenty-one".