102220330421 has 32 divisors (see below), whose sum is σ = 121329145728. Its totient is φ = 85051607040.

The previous prime is 102220330367. The next prime is 102220330447. The reversal of 102220330421 is 124033022201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220330421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102220330393 and 102220330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220338421) 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 31 ways as a sum of consecutive naturals, for example, 20429306 + ... + 20434308.

It is an arithmetic number, because the mean of its divisors is an integer number (3791535804).

Almost surely, 2^102220330421 is an apocalyptic number.

102220330421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102220330421 is a deficient number, since it is larger than the sum of its proper divisors (19108815307).

102220330421 is a wasteful number, since it uses less digits than its factorization.

102220330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 102220330421 its reverse (124033022201), we get a palindrome (226253352622).

The spelling of 102220330421 in words is "one hundred two billion, two hundred twenty million, three hundred thirty thousand, four hundred twenty-one".