1220022523013 has 12 divisors (see below), whose sum is σ = 1419457063500. Its totient is φ = 1045551451392.

The previous prime is 1220022523001. The next prime is 1220022523033. The reversal of 1220022523013 is 3103252200221.

It can be written as a sum of positive squares in 2 ways, for example, as 552914190724 + 667108332289 = 743582^2 + 816767^2 .

It is not a de Polignac number, because 1220022523013 - 2¹⁰ = 1220022521989 is a prime.

It is a super-2 number, since 2×1220022523013² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220022523013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022523033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1883756 + ... + 2447157.

It is an arithmetic number, because the mean of its divisors is an integer number (118288088625).

Almost surely, 2^{1220022523013} is an apocalyptic number.

It is an amenable number.

1220022523013 is a deficient number, since it is larger than the sum of its proper divisors (199434540487).

1220022523013 is an equidigital number, since it uses as much as digits as its factorization.

1220022523013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336676 (or 4336669 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 1220022523013 its reverse (3103252200221), we get a palindrome (4323274723234).

The spelling of 1220022523013 in words is "one trillion, two hundred twenty billion, twenty-two million, five hundred twenty-three thousand, thirteen".