1220401231241 has 4 divisors (see below), whose sum is σ = 1221356910852. Its totient is φ = 1219445551632.

The previous prime is 1220401231213. The next prime is 1220401231289. The reversal of 1220401231241 is 1421321040221.

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 597413055625 + 622988175616 = 772925^2 + 789296^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220401231241 - 2⁶ = 1220401231177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220401231541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477837890 + ... + 477840443.

It is an arithmetic number, because the mean of its divisors is an integer number (305339227713).

Almost surely, 2^{1220401231241} is an apocalyptic number.

It is an amenable number.

1220401231241 is a deficient number, since it is larger than the sum of its proper divisors (955679611).

1220401231241 is an equidigital number, since it uses as much as digits as its factorization.

1220401231241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955679610.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1220401231241 its reverse (1421321040221), we get a palindrome (2641722271462).

The spelling of 1220401231241 in words is "one trillion, two hundred twenty billion, four hundred one million, two hundred thirty-one thousand, two hundred forty-one".