102230111421 has 28 divisors (see below), whose sum is σ = 154792736700. Its totient is φ = 67478572800.

The previous prime is 102230111411. The next prime is 102230111429. The reversal of 102230111421 is 124111032201.

102230111421 is a `hidden beast` number, since 1 + 0 + 2 + 230 + 1 + 11 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 94624527321 + 7605584100 = 307611^2 + 87210^2 .

It is not a de Polignac number, because 102230111421 - 2²⁷ = 102095893693 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102230111394 and 102230111403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102230111429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 620596 + ... + 767853.

It is an arithmetic number, because the mean of its divisors is an integer number (5528312025).

Almost surely, 2^102230111421 is an apocalyptic number.

It is an amenable number.

102230111421 is a deficient number, since it is larger than the sum of its proper divisors (52562625279).

102230111421 is an equidigital number, since it uses as much as digits as its factorization.

102230111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388568 (or 1388553 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 102230111421 its reverse (124111032201), we get a palindrome (226341143622).

The spelling of 102230111421 in words is "one hundred two billion, two hundred thirty million, one hundred eleven thousand, four hundred twenty-one".