1220423032993 has 2 divisors, whose sum is σ = 1220423032994. Its totient is φ = 1220423032992.

The previous prime is 1220423032991. The next prime is 1220423033059. The reversal of 1220423032993 is 3992303240221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743538870369 + 476884162624 = 862287^2 + 690568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220423032993 - 2¹ = 1220423032991 is a prime.

Together with 1220423032991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220423032991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610211516496 + 610211516497.

It is an arithmetic number, because the mean of its divisors is an integer number (610211516497).

Almost surely, 2^{1220423032993} is an apocalyptic number.

It is an amenable number.

1220423032993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220423032993 is an equidigital number, since it uses as much as digits as its factorization.

1220423032993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 1220423032993 in words is "one trillion, two hundred twenty billion, four hundred twenty-three million, thirty-two thousand, nine hundred ninety-three".