1220221202011 has 8 divisors (see below), whose sum is σ = 1400523662304. Its totient is φ = 1041415028160.

The previous prime is 1220221201993. The next prime is 1220221202027. The reversal of 1220221202011 is 1102021220221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220221202011 - 2⁷ = 1220221201883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220221205011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374069860 + ... + 374073121.

It is an arithmetic number, because the mean of its divisors is an integer number (175065457788).

Almost surely, 2^{1220221202011} is an apocalyptic number.

1220221202011 is a deficient number, since it is larger than the sum of its proper divisors (180302460293).

1220221202011 is an equidigital number, since it uses as much as digits as its factorization.

1220221202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748143221.

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

Adding to 1220221202011 its reverse (1102021220221), we get a palindrome (2322242422232).

The spelling of 1220221202011 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, two hundred two thousand, eleven".