21121021100022 has 8 divisors (see below), whose sum is σ = 42242042200056. Its totient is φ = 7040340366672.

The previous prime is 21121021100017. The next prime is 21121021100029. The reversal of 21121021100022 is 22000112012112.

It is a sphenic number, since it is the product of 3 distinct primes.

21121021100022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21121021099974 and 21121021100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121021100029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760085091663 + ... + 1760085091674.

It is an arithmetic number, because the mean of its divisors is an integer number (5280255275007).

Almost surely, 2^{21121021100022} is an apocalyptic number.

21121021100022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21121021100022 is a wasteful number, since it uses less digits than its factorization.

21121021100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520170183342.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21121021100022 its reverse (22000112012112), we get a palindrome (43121133112134).

The spelling of 21121021100022 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-one million, one hundred thousand, twenty-two".