102020012210221 has 32 divisors (see below), whose sum is σ = 119044005696000. Its totient is φ = 85622354657280.

The previous prime is 102020012210219. The next prime is 102020012210231. The reversal of 102020012210221 is 122012210020201.

It is a happy number.

It is not a de Polignac number, because 102020012210221 - 2¹ = 102020012210219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020012210195 and 102020012210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020012210201) 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 31 ways as a sum of consecutive naturals, for example, 82401600 + ... + 83630518.

It is an arithmetic number, because the mean of its divisors is an integer number (3720125178000).

Almost surely, 2^{102020012210221} is an apocalyptic number.

It is an amenable number.

102020012210221 is a deficient number, since it is larger than the sum of its proper divisors (17023993485779).

102020012210221 is a wasteful number, since it uses less digits than its factorization.

102020012210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229869.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102020012210221 its reverse (122012210020201), we get a palindrome (224032222230422).

The spelling of 102020012210221 in words is "one hundred two trillion, twenty billion, twelve million, two hundred ten thousand, two hundred twenty-one".