1220655128335 has 4 divisors (see below), whose sum is σ = 1464786154008. Its totient is φ = 976524102664.

The previous prime is 1220655128333. The next prime is 1220655128351. The reversal of 1220655128335 is 5338215560221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220655128335 - 2¹ = 1220655128333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220655128291 and 1220655128300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220655128333) 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, 122065512829 + ... + 122065512838.

It is an arithmetic number, because the mean of its divisors is an integer number (366196538502).

Almost surely, 2^{1220655128335} is an apocalyptic number.

1220655128335 is a deficient number, since it is larger than the sum of its proper divisors (244131025673).

1220655128335 is an equidigital number, since it uses as much as digits as its factorization.

1220655128335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244131025672.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 1220655128335 in words is "one trillion, two hundred twenty billion, six hundred fifty-five million, one hundred twenty-eight thousand, three hundred thirty-five".