1220023332013 has 4 divisors (see below), whose sum is σ = 1220034076668. Its totient is φ = 1220012587360.

The previous prime is 1220023331999. The next prime is 1220023332037. The reversal of 1220023332013 is 3102333200221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1187101769764 + 32921562249 = 1089542^2 + 181443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220023332013 - 2²⁹ = 1219486461101 is a prime.

It is a super-2 number, since 2×1220023332013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220023332313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200168 + ... + 5429713.

It is an arithmetic number, because the mean of its divisors is an integer number (305008519167).

Almost surely, 2^{1220023332013} is an apocalyptic number.

It is an amenable number.

1220023332013 is a deficient number, since it is larger than the sum of its proper divisors (10744655).

1220023332013 is a wasteful number, since it uses less digits than its factorization.

1220023332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10744654.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1220023332013 its reverse (3102333200221), we get a palindrome (4322356532234).

The spelling of 1220023332013 in words is "one trillion, two hundred twenty billion, twenty-three million, three hundred thirty-two thousand, thirteen".