1220204231241 has 16 divisors (see below), whose sum is σ = 1665469132800. Its totient is φ = 794220189840.

The previous prime is 1220204231231. The next prime is 1220204231243. The reversal of 1220204231241 is 1421324020221.

It is a de Polignac number, because none of the positive numbers 2^k-1220204231241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220204231243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661965 + ... + 2280906.

It is an arithmetic number, because the mean of its divisors is an integer number (104091820800).

Almost surely, 2^{1220204231241} is an apocalyptic number.

It is an amenable number.

1220204231241 is a deficient number, since it is larger than the sum of its proper divisors (445264901559).

1220204231241 is a wasteful number, since it uses less digits than its factorization.

1220204231241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945316.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1220204231241 its reverse (1421324020221), we get a palindrome (2641528251462).

The spelling of 1220204231241 in words is "one trillion, two hundred twenty billion, two hundred four million, two hundred thirty-one thousand, two hundred forty-one".