100212121222 has 8 divisors (see below), whose sum is σ = 150346900656. Its totient is φ = 50096487672.

The previous prime is 100212121183. The next prime is 100212121279. The reversal of 100212121222 is 222121212001.

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 = 100212121196 and 100212121205.

It is a congruent number.

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, 4773378 + ... + 4794325.

It is an arithmetic number, because the mean of its divisors is an integer number (18793362582).

Almost surely, 2^100212121222 is an apocalyptic number.

100212121222 is a deficient number, since it is larger than the sum of its proper divisors (50134779434).

100212121222 is an equidigital number, since it uses as much as digits as its factorization.

100212121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572942.

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

Adding to 100212121222 its reverse (222121212001), we get a palindrome (322333333223).

The spelling of 100212121222 in words is "one hundred billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twenty-two".