21111221100022 has 8 divisors (see below), whose sum is σ = 31712005449072. Its totient is φ = 10540552617000.

The previous prime is 21111221100017. The next prime is 21111221100089. The reversal of 21111221100022 is 22000112211112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21111221099969 and 21111221100005.

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, 7528964754 + ... + 7528967557.

It is an arithmetic number, because the mean of its divisors is an integer number (3964000681134).

Almost surely, 2^{21111221100022} is an apocalyptic number.

21111221100022 is a deficient number, since it is larger than the sum of its proper divisors (10600784349050).

21111221100022 is a wasteful number, since it uses less digits than its factorization.

21111221100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15057933014.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21111221100022 its reverse (22000112211112), we get a palindrome (43111333311134).

The spelling of 21111221100022 in words is "twenty-one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred thousand, twenty-two".