1220100211222 has 4 divisors (see below), whose sum is σ = 1830150316836. Its totient is φ = 610050105610.

The previous prime is 1220100211181. The next prime is 1220100211241. The reversal of 1220100211222 is 2221120010221.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220100211196 and 1220100211205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305025052804 + ... + 305025052807.

It is an arithmetic number, because the mean of its divisors is an integer number (457537579209).

Almost surely, 2^{1220100211222} is an apocalyptic number.

1220100211222 is a deficient number, since it is larger than the sum of its proper divisors (610050105614).

1220100211222 is an equidigital number, since it uses as much as digits as its factorization.

1220100211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610050105613.

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

Adding to 1220100211222 its reverse (2221120010221), we get a palindrome (3441220221443).

The spelling of 1220100211222 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, two hundred twenty-two".