21110001111122 has 16 divisors (see below), whose sum is σ = 39478443636672. Its totient is φ = 8224675757520.

The previous prime is 21110001111047. The next prime is 21110001111193. The reversal of 21110001111122 is 22111110001112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 21110001111097 and 21110001111106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68538964493 + ... + 68538964800.

It is an arithmetic number, because the mean of its divisors is an integer number (2467402727292).

Almost surely, 2^{21110001111122} is an apocalyptic number.

21110001111122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110001111122 is a deficient number, since it is larger than the sum of its proper divisors (18368442525550).

21110001111122 is a wasteful number, since it uses less digits than its factorization.

21110001111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137077929313.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21110001111122 its reverse (22111110001112), we get a palindrome (43221111112234).

The spelling of 21110001111122 in words is "twenty-one trillion, one hundred ten billion, one million, one hundred eleven thousand, one hundred twenty-two".