100211122221 has 8 divisors (see below), whose sum is σ = 152702662464. Its totient is φ = 57263498400.

The previous prime is 100211122213. The next prime is 100211122237. The reversal of 100211122221 is 122221112001.

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

It is not a de Polignac number, because 100211122221 - 2³ = 100211122213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100211122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100211122201) 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, 2385979080 + ... + 2385979121.

It is an arithmetic number, because the mean of its divisors is an integer number (19087832808).

Almost surely, 2^100211122221 is an apocalyptic number.

It is an amenable number.

100211122221 is a deficient number, since it is larger than the sum of its proper divisors (52491540243).

100211122221 is an equidigital number, since it uses as much as digits as its factorization.

100211122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4771958211.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100211122221 its reverse (122221112001), we get a palindrome (222432234222).

The spelling of 100211122221 in words is "one hundred billion, two hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".