21101121111022 has 32 divisors (see below), whose sum is σ = 32913445017600. Its totient is φ = 10135013608800.

The previous prime is 21101121111011. The next prime is 21101121111073. The reversal of 21101121111022 is 22011112110112.

It is a junction number, because it is equal to n+sod(n) for n = 21101121110987 and 21101121111005.

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 15 ways as a sum of consecutive naturals, for example, 50370447 + ... + 50787637.

It is an arithmetic number, because the mean of its divisors is an integer number (1028545156800).

Almost surely, 2^{21101121111022} is an apocalyptic number.

21101121111022 is a deficient number, since it is larger than the sum of its proper divisors (11812323906578).

21101121111022 is a wasteful number, since it uses less digits than its factorization.

21101121111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423232.

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

Adding to 21101121111022 its reverse (22011112110112), we get a palindrome (43112233221134).

The spelling of 21101121111022 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-one million, one hundred eleven thousand, twenty-two".