1220221001122 has 4 divisors (see below), whose sum is σ = 1830331501686. Its totient is φ = 610110500560.

The previous prime is 1220221001119. The next prime is 1220221001123. The reversal of 1220221001122 is 2211001220221.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1093386013801 + 126834987321 = 1045651^2 + 356139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220221001096 and 1220221001105.

It is not an unprimeable number, because it can be changed into a prime (1220221001123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305055250279 + ... + 305055250282.

Almost surely, 2^{1220221001122} is an apocalyptic number.

1220221001122 is a deficient number, since it is larger than the sum of its proper divisors (610110500564).

1220221001122 is an equidigital number, since it uses as much as digits as its factorization.

1220221001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610110500563.

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

Adding to 1220221001122 its reverse (2211001220221), we get a palindrome (3431222221343).

The spelling of 1220221001122 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one thousand, one hundred twenty-two".