21212011100022 has 8 divisors (see below), whose sum is σ = 42424022200056. Its totient is φ = 7070670366672.

The previous prime is 21212011099973. The next prime is 21212011100057. The reversal of 21212011100022 is 22000111021212.

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

21212011100022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21212011099974 and 21212011100010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767667591663 + ... + 1767667591674.

It is an arithmetic number, because the mean of its divisors is an integer number (5303002775007).

Almost surely, 2^{21212011100022} is an apocalyptic number.

21212011100022 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.

21212011100022 is a wasteful number, since it uses less digits than its factorization.

21212011100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535335183342.

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

Adding to 21212011100022 its reverse (22000111021212), we get a palindrome (43212122121234).

It can be divided in two parts, 2121201 and 1100022, that added together give a palindrome (3221223).

The spelling of 21212011100022 in words is "twenty-one trillion, two hundred twelve billion, eleven million, one hundred thousand, twenty-two".