100021232221 has 8 divisors (see below), whose sum is σ = 105627453120. Its totient is φ = 94519800672.

The previous prime is 100021232183. The next prime is 100021232231. The reversal of 100021232221 is 122232120001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100021232221 - 2⁷ = 100021232093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100021232195 and 100021232204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021232231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26195376 + ... + 26199193.

It is an arithmetic number, because the mean of its divisors is an integer number (13203431640).

Almost surely, 2^100021232221 is an apocalyptic number.

It is an amenable number.

100021232221 is a deficient number, since it is larger than the sum of its proper divisors (5606220899).

100021232221 is an equidigital number, since it uses as much as digits as its factorization.

100021232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52394675.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100021232221 its reverse (122232120001), we get a palindrome (222253352222).

The spelling of 100021232221 in words is "one hundred billion, twenty-one million, two hundred thirty-two thousand, two hundred twenty-one".