21220122102174 has 48 divisors (see below), whose sum is σ = 47159373243840. Its totient is φ = 6893587529280.

The previous prime is 21220122102173. The next prime is 21220122102227. The reversal of 21220122102174 is 47120122102212.

21220122102174 is a `hidden beast` number, since 2 + 1 + 220 + 1 + 221 + 0 + 217 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220122102173) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 88532422 + ... + 88771785.

It is an arithmetic number, because the mean of its divisors is an integer number (982486942580).

Almost surely, 2^{21220122102174} is an apocalyptic number.

21220122102174 is an abundant number, since it is smaller than the sum of its proper divisors (25939251141666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21220122102174 is a wasteful number, since it uses less digits than its factorization.

21220122102174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177304385 (or 177304382 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

Adding to 21220122102174 its reverse (47120122102212), we get a palindrome (68340244204386).

The spelling of 21220122102174 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred two thousand, one hundred seventy-four".