102213321021 has 24 divisors (see below), whose sum is σ = 169581027200. Its totient is φ = 58114099296.

The previous prime is 102213321019. The next prime is 102213321037. The reversal of 102213321021 is 120123312201.

102213321021 is a `hidden beast` number, since 10 + 221 + 332 + 102 + 1 = 666.

It is not a de Polignac number, because 102213321021 - 2¹ = 102213321019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102213320985 and 102213321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102213361021) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4063930 + ... + 4089003.

Almost surely, 2^102213321021 is an apocalyptic number.

It is an amenable number.

102213321021 is a deficient number, since it is larger than the sum of its proper divisors (67367706179).

102213321021 is a wasteful number, since it uses less digits than its factorization.

102213321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153145 (or 8153142 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102213321021 its reverse (120123312201), we get a palindrome (222336633222).

The spelling of 102213321021 in words is "one hundred two billion, two hundred thirteen million, three hundred twenty-one thousand, twenty-one".