102231021321 has 64 divisors (see below), whose sum is σ = 178196336640. Its totient is φ = 57106969920.

The previous prime is 102231021317. The next prime is 102231021331. The reversal of 102231021321 is 123120132201.

102231021321 is a `hidden beast` number, since 10 + 2 + 2 + 310 + 21 + 321 = 666.

It is not a de Polignac number, because 102231021321 - 2² = 102231021317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102231021294 and 102231021303.

It is not an unprimeable number, because it can be changed into a prime (102231021331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2617680 + ... + 2656446.

It is an arithmetic number, because the mean of its divisors is an integer number (2784317760).

Almost surely, 2^102231021321 is an apocalyptic number.

102231021321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102231021321 is a deficient number, since it is larger than the sum of its proper divisors (75965315319).

102231021321 is a wasteful number, since it uses less digits than its factorization.

102231021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39483 (or 39477 counting only the distinct ones).

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

Adding to 102231021321 its reverse (123120132201), we get a palindrome (225351153522).

The spelling of 102231021321 in words is "one hundred two billion, two hundred thirty-one million, twenty-one thousand, three hundred twenty-one".