100222122220 has 24 divisors (see below), whose sum is σ = 229599771408. Its totient is φ = 36444408000.

The previous prime is 100222122197. The next prime is 100222122283. The reversal of 100222122220 is 22221222001.

It is a junction number, because it is equal to n+sod(n) for n = 100222122194 and 100222122203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227777331 + ... + 227777770.

It is an arithmetic number, because the mean of its divisors is an integer number (9566657142).

Almost surely, 2^100222122220 is an apocalyptic number.

100222122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100222122220 is an abundant number, since it is smaller than the sum of its proper divisors (129377649188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100222122220 is a wasteful number, since it uses less digits than its factorization.

100222122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455555121 (or 455555119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 100222122220 its reverse (22221222001), we get a palindrome (122443344221).

The spelling of 100222122220 in words is "one hundred billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".