100202122221 has 8 divisors (see below), whose sum is σ = 135596901984. Its totient is φ = 65804378640.

The previous prime is 100202122217. The next prime is 100202122243. The reversal of 100202122221 is 122221202001.

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

It is not a de Polignac number, because 100202122221 - 2² = 100202122217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100202122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202122921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249258810 + ... + 249259211.

It is an arithmetic number, because the mean of its divisors is an integer number (16949612748).

Almost surely, 2^100202122221 is an apocalyptic number.

It is an amenable number.

100202122221 is a deficient number, since it is larger than the sum of its proper divisors (35394779763).

100202122221 is an equidigital number, since it uses as much as digits as its factorization.

100202122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498518091.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100202122221 its reverse (122221202001), we get a palindrome (222423324222).

The spelling of 100202122221 in words is "one hundred billion, two hundred two million, one hundred twenty-two thousand, two hundred twenty-one".