1220012020111 has 8 divisors (see below), whose sum is σ = 1240033790000. Its totient is φ = 1199990946240.

The previous prime is 1220012020061. The next prime is 1220012020141. The reversal of 1220012020111 is 1110202100221.

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 1220012020111 - 2¹¹ = 1220012018063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220012020091 and 1220012020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220012020141) 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, 4293940 + ... + 4569238.

It is an arithmetic number, because the mean of its divisors is an integer number (155004223750).

Almost surely, 2^{1220012020111} is an apocalyptic number.

1220012020111 is a deficient number, since it is larger than the sum of its proper divisors (20021769889).

1220012020111 is an equidigital number, since it uses as much as digits as its factorization.

1220012020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348009.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220012020111 its reverse (1110202100221), we get a palindrome (2330214120332).

The spelling of 1220012020111 in words is "one trillion, two hundred twenty billion, twelve million, twenty thousand, one hundred eleven".