1220012221011 has 8 divisors (see below), whose sum is σ = 1626734163600. Its totient is φ = 813315879552.

The previous prime is 1220012221003. The next prime is 1220012221061. The reversal of 1220012221011 is 1101222100221.

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

It is not a de Polignac number, because 1220012221011 - 2³ = 1220012221003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220012221061) 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 7 ways as a sum of consecutive naturals, for example, 6288810 + ... + 6479903.

It is an arithmetic number, because the mean of its divisors is an integer number (203341770450).

Almost surely, 2^{1220012221011} is an apocalyptic number.

1220012221011 is a deficient number, since it is larger than the sum of its proper divisors (406721942589).

1220012221011 is a wasteful number, since it uses less digits than its factorization.

1220012221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800565.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220012221011 its reverse (1101222100221), we get a palindrome (2321234321232).

The spelling of 1220012221011 in words is "one trillion, two hundred twenty billion, twelve million, two hundred twenty-one thousand, eleven".