102102012222221 has 16 divisors (see below), whose sum is σ = 121028469504000. Its totient is φ = 85098142609200.

The previous prime is 102102012222179. The next prime is 102102012222239. The reversal of 102102012222221 is 122222210201201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102102012222221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102102012222193 and 102102012222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102012222281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7879451171 + ... + 7879464128.

It is an arithmetic number, because the mean of its divisors is an integer number (7564279344000).

Almost surely, 2^{102102012222221} is an apocalyptic number.

102102012222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102102012222221 is a deficient number, since it is larger than the sum of its proper divisors (18926457281779).

102102012222221 is a wasteful number, since it uses less digits than its factorization.

102102012222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15758915360.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102102012222221 its reverse (122222210201201), we get a palindrome (224324222423422).

The spelling of 102102012222221 in words is "one hundred two trillion, one hundred two billion, twelve million, two hundred twenty-two thousand, two hundred twenty-one".