1220111013023 has 32 divisors (see below), whose sum is σ = 1405568569344. Its totient is φ = 1037486040192.

The previous prime is 1220111012993. The next prime is 1220111013029. The reversal of 1220111013023 is 3203101110221.

It is not a de Polignac number, because 1220111013023 - 2¹² = 1220111008927 is a prime.

It is a super-2 number, since 2×1220111013023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220111012992 and 1220111013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220111013029) 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 31 ways as a sum of consecutive naturals, for example, 631199765 + ... + 631201697.

It is an arithmetic number, because the mean of its divisors is an integer number (43924017792).

Almost surely, 2^{1220111013023} is an apocalyptic number.

1220111013023 is a deficient number, since it is larger than the sum of its proper divisors (185457556321).

1220111013023 is a wasteful number, since it uses less digits than its factorization.

1220111013023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1220111013023 its reverse (3203101110221), we get a palindrome (4423212123244).

The spelling of 1220111013023 in words is "one trillion, two hundred twenty billion, one hundred eleven million, thirteen thousand, twenty-three".