1220221110202 has 24 divisors (see below), whose sum is σ = 1879189533396. Its totient is φ = 594135307584.

The previous prime is 1220221110169. The next prime is 1220221110223. The reversal of 1220221110202 is 2020111220221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1169493007761 + 50728102441 = 1081431^2 + 225229^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241608 + ... + 1580764.

Almost surely, 2^{1220221110202} is an apocalyptic number.

1220221110202 is a deficient number, since it is larger than the sum of its proper divisors (658968423194).

1220221110202 is an equidigital number, since it uses as much as digits as its factorization.

1220221110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339390 (or 1339311 counting only the distinct ones).

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

Adding to 1220221110202 its reverse (2020111220221), we get a palindrome (3240332330423).

The spelling of 1220221110202 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, two hundred two".