100221212122 has 8 divisors (see below), whose sum is σ = 158244019200. Its totient is φ = 47473205724.

The previous prime is 100221212111. The next prime is 100221212209. The reversal of 100221212122 is 221212122001.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 100221212096 and 100221212105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1318700122 + ... + 1318700197.

It is an arithmetic number, because the mean of its divisors is an integer number (19780502400).

Almost surely, 2^100221212122 is an apocalyptic number.

100221212122 is a deficient number, since it is larger than the sum of its proper divisors (58022807078).

100221212122 is a wasteful number, since it uses less digits than its factorization.

100221212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637400340.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 100221212122 its reverse (221212122001), we get a palindrome (321433334123).

The spelling of 100221212122 in words is "one hundred billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".