221021212022102 has 96 divisors (see below), whose sum is σ = 367835248420992. Its totient is φ = 99244362240000.

The previous prime is 221021212022089. The next prime is 221021212022113. The reversal of 221021212022102 is 201220212120122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 795178883 + ... + 795456785.

It is an arithmetic number, because the mean of its divisors is an integer number (3831617171052).

Almost surely, 2^{221021212022102} is an apocalyptic number.

221021212022102 is a deficient number, since it is larger than the sum of its proper divisors (146814036398890).

221021212022102 is a wasteful number, since it uses less digits than its factorization.

221021212022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278326 (or 278295 counting only the distinct ones).

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

Adding to 221021212022102 its reverse (201220212120122), we get a palindrome (422241424142224).

The spelling of 221021212022102 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred twelve million, twenty-two thousand, one hundred two".