210021100100022 has 16 divisors (see below), whose sum is σ = 420048452843712. Its totient is φ = 70005991259400.

The previous prime is 210021100099903. The next prime is 210021100100047. The reversal of 210021100100022 is 220001001120012.

It is a super-3 number, since 3×210021100100022³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210021100099980 and 210021100100007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260090104 + ... + 260896347.

It is an arithmetic number, because the mean of its divisors is an integer number (26253028302732).

Almost surely, 2^{210021100100022} is an apocalyptic number.

210021100100022 is an abundant number, since it is smaller than the sum of its proper divisors (210027352743690).

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

210021100100022 is a wasteful number, since it uses less digits than its factorization.

210021100100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521053643.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210021100100022 its reverse (220001001120012), we get a palindrome (430022101220034).

The spelling of 210021100100022 in words is "two hundred ten trillion, twenty-one billion, one hundred million, one hundred thousand, twenty-two".