21220101212174 has 8 divisors (see below), whose sum is σ = 32927743260360. Its totient is φ = 10244186792056.

The previous prime is 21220101212173. The next prime is 21220101212213. The reversal of 21220101212174 is 47121210102212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220101212173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182931906944 + ... + 182931907059.

It is an arithmetic number, because the mean of its divisors is an integer number (4115967907545).

Almost surely, 2^{21220101212174} is an apocalyptic number.

21220101212174 is a deficient number, since it is larger than the sum of its proper divisors (11707642048186).

21220101212174 is a wasteful number, since it uses less digits than its factorization.

21220101212174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365863814034.

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 21220101212174 its reverse (47121210102212), we get a palindrome (68341311314386).

The spelling of 21220101212174 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, two hundred twelve thousand, one hundred seventy-four".