21220122102197 has 8 divisors (see below), whose sum is σ = 21714395630400. Its totient is φ = 20725884133920.

The previous prime is 21220122102173. The next prime is 21220122102227. The reversal of 21220122102197 is 79120122102212.

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

It is not a de Polignac number, because 21220122102197 - 2¹⁰ = 21220122101173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220122102797) 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 7 ways as a sum of consecutive naturals, for example, 7680704 + ... + 10071417.

It is an arithmetic number, because the mean of its divisors is an integer number (2714299453800).

Almost surely, 2^{21220122102197} is an apocalyptic number.

It is an amenable number.

21220122102197 is a deficient number, since it is larger than the sum of its proper divisors (494273528203).

21220122102197 is a wasteful number, since it uses less digits than its factorization.

21220122102197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17779963.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 21220122102197 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred two thousand, one hundred ninety-seven".