100212221222 has 4 divisors (see below), whose sum is σ = 150318331836. Its totient is φ = 50106110610.

The previous prime is 100212221183. The next prime is 100212221257. The reversal of 100212221222 is 222122212001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 100212221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25053055304 + ... + 25053055307.

It is an arithmetic number, because the mean of its divisors is an integer number (37579582959).

Almost surely, 2^100212221222 is an apocalyptic number.

100212221222 is a deficient number, since it is larger than the sum of its proper divisors (50106110614).

100212221222 is an equidigital number, since it uses as much as digits as its factorization.

100212221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50106110613.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100212221222 its reverse (222122212001), we get a palindrome (322334433223).

The spelling of 100212221222 in words is "one hundred billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-two".