1220221100122 has 8 divisors (see below), whose sum is σ = 1830703759200. Its totient is φ = 609986513724.

The previous prime is 1220221100117. The next prime is 1220221100123. The reversal of 1220221100122 is 2210011220221.

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 = 1220221100096 and 1220221100105.

It is not an unprimeable number, because it can be changed into a prime (1220221100123) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 62005872 + ... + 62025547.

It is an arithmetic number, because the mean of its divisors is an integer number (228837969900).

Almost surely, 2^{1220221100122} is an apocalyptic number.

1220221100122 is a deficient number, since it is larger than the sum of its proper divisors (610482659078).

1220221100122 is a wasteful number, since it uses less digits than its factorization.

1220221100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124036340.

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

Adding to 1220221100122 its reverse (2210011220221), we get a palindrome (3430232320343).

The spelling of 1220221100122 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-two".