102212212021221 has 8 divisors (see below), whose sum is σ = 136284157920064. Its totient is φ = 68140870401600.

The previous prime is 102212212021181. The next prime is 102212212021223. The reversal of 102212212021221 is 122120212212201.

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

It is not a de Polignac number, because 102212212021221 - 2¹⁰ = 102212212020197 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 (102212212021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150674980 + ... + 151351821.

It is an arithmetic number, because the mean of its divisors is an integer number (17035519740008).

Almost surely, 2^{102212212021221} is an apocalyptic number.

It is an amenable number.

102212212021221 is a deficient number, since it is larger than the sum of its proper divisors (34071945898843).

102212212021221 is a wasteful number, since it uses less digits than its factorization.

102212212021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302139611.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 102212212021221 its reverse (122120212212201), we get a palindrome (224332424233422).

The spelling of 102212212021221 in words is "one hundred two trillion, two hundred twelve billion, two hundred twelve million, twenty-one thousand, two hundred twenty-one".