100220111221222 has 4 divisors (see below), whose sum is σ = 150330166831836. Its totient is φ = 50110055610610.

The previous prime is 100220111221193. The next prime is 100220111221229. The reversal of 100220111221222 is 222122111022001.

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 100220111221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220111221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25055027805304 + ... + 25055027805307.

It is an arithmetic number, because the mean of its divisors is an integer number (37582541707959).

Almost surely, 2^{100220111221222} is an apocalyptic number.

100220111221222 is a deficient number, since it is larger than the sum of its proper divisors (50110055610614).

100220111221222 is an equidigital number, since it uses as much as digits as its factorization.

100220111221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50110055610613.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 100220111221222 its reverse (222122111022001), we get a palindrome (322342222243223).

The spelling of 100220111221222 in words is "one hundred trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".