100211031221 has 8 divisors (see below), whose sum is σ = 114812499264. Its totient is φ = 85680964800.

The previous prime is 100211031209. The next prime is 100211031223. The reversal of 100211031221 is 122130112001.

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 100211031221 - 2⁶ = 100211031157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100211031196 and 100211031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211031223) 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, 17847395 + ... + 17853008.

It is an arithmetic number, because the mean of its divisors is an integer number (14351562408).

Almost surely, 2^100211031221 is an apocalyptic number.

It is an amenable number.

100211031221 is a deficient number, since it is larger than the sum of its proper divisors (14601468043).

100211031221 is an equidigital number, since it uses as much as digits as its factorization.

100211031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35700811.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 100211031221 its reverse (122130112001), we get a palindrome (222341143222).

The spelling of 100211031221 in words is "one hundred billion, two hundred eleven million, thirty-one thousand, two hundred twenty-one".