21121110111022 has 8 divisors (see below), whose sum is σ = 31681795300056. Its totient is φ = 10560511677672.

The previous prime is 21121110110999. The next prime is 21121110111047. The reversal of 21121110111022 is 22011101112112.

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

It is a super-2 number, since 2×21121110111022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21121110110987 and 21121110111005.

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 3 ways as a sum of consecutive naturals, for example, 21076828 + ... + 22056175.

It is an arithmetic number, because the mean of its divisors is an integer number (3960224412507).

Almost surely, 2^{21121110111022} is an apocalyptic number.

21121110111022 is a deficient number, since it is larger than the sum of its proper divisors (10560685189034).

21121110111022 is a wasteful number, since it uses less digits than its factorization.

21121110111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43377842.

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

Adding to 21121110111022 its reverse (22011101112112), we get a palindrome (43132211223134).

The spelling of 21121110111022 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred ten million, one hundred eleven thousand, twenty-two".