1220221012202 has 4 divisors (see below), whose sum is σ = 1830331518306. Its totient is φ = 610110506100.

The previous prime is 1220221012193. The next prime is 1220221012243. The reversal of 1220221012202 is 2022101220221.

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., 838013915761 + 382207096441 = 915431^2 + 618229^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305055253049 + ... + 305055253052.

Almost surely, 2^{1220221012202} is an apocalyptic number.

1220221012202 is a deficient number, since it is larger than the sum of its proper divisors (610110506104).

1220221012202 is an equidigital number, since it uses as much as digits as its factorization.

1220221012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610110506103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1220221012202 its reverse (2022101220221), we get a palindrome (3242322232423).

The spelling of 1220221012202 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twelve thousand, two hundred two".