21210011100022 has 16 divisors (see below), whose sum is σ = 33792754759200. Its totient is φ = 9949695311488.

The previous prime is 21210011099957. The next prime is 21210011100071. The reversal of 21210011100022 is 22000111001212.

It is a junction number, because it is equal to n+sod(n) for n = 21210011099975 and 21210011100011.

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, 983938522 + ... + 983960077.

It is an arithmetic number, because the mean of its divisors is an integer number (2112047172450).

Almost surely, 2^{21210011100022} is an apocalyptic number.

21210011100022 is a deficient number, since it is larger than the sum of its proper divisors (12582743659178).

21210011100022 is a wasteful number, since it uses less digits than its factorization.

21210011100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967898935.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21210011100022 its reverse (22000111001212), we get a palindrome (43210122101234).

The spelling of 21210011100022 in words is "twenty-one trillion, two hundred ten billion, eleven million, one hundred thousand, twenty-two".