1220256134013 has 64 divisors (see below), whose sum is σ = 1986911188992. Its totient is φ = 650265200640.

The previous prime is 1220256134011. The next prime is 1220256134033. The reversal of 1220256134013 is 3104316520221.

It is not a de Polignac number, because 1220256134013 - 2¹ = 1220256134011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220256134011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19229545 + ... + 19292897.

It is an arithmetic number, because the mean of its divisors is an integer number (31045487328).

Almost surely, 2^{1220256134013} is an apocalyptic number.

It is an amenable number.

1220256134013 is a deficient number, since it is larger than the sum of its proper divisors (766655054979).

1220256134013 is a wasteful number, since it uses less digits than its factorization.

1220256134013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63874.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 1220256134013 in words is "one trillion, two hundred twenty billion, two hundred fifty-six million, one hundred thirty-four thousand, thirteen".