102101323221 has 24 divisors (see below), whose sum is σ = 148589126400. Its totient is φ = 67555722816.

The previous prime is 102101323151. The next prime is 102101323237. The reversal of 102101323221 is 122323101201.

102101323221 is a `hidden beast` number, since 1 + 0 + 210 + 132 + 322 + 1 = 666.

It is not a de Polignac number, because 102101323221 - 2¹⁵ = 102101290453 is a prime.

It is a super-2 number, since 2×102101323221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102101323194 and 102101323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101323271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9813180 + ... + 9823578.

It is an arithmetic number, because the mean of its divisors is an integer number (6191213600).

Almost surely, 2^102101323221 is an apocalyptic number.

It is an amenable number.

102101323221 is a deficient number, since it is larger than the sum of its proper divisors (46487803179).

102101323221 is a wasteful number, since it uses less digits than its factorization.

102101323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18505 (or 18502 counting only the distinct ones).

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

Adding to 102101323221 its reverse (122323101201), we get a palindrome (224424424422).

The spelling of 102101323221 in words is "one hundred two billion, one hundred one million, three hundred twenty-three thousand, two hundred twenty-one".