1221041431341 has 6 divisors (see below), whose sum is σ = 1763726511950. Its totient is φ = 814027620888.

The previous prime is 1221041431303. The next prime is 1221041431349. The reversal of 1221041431341 is 1431341401221.

It is a happy number.

1221041431341 is a `hidden beast` number, since 1 + 2 + 210 + 414 + 3 + 1 + 34 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 899739514116 + 321301917225 = 948546^2 + 566835^2 .

It is not a de Polignac number, because 1221041431341 - 2⁷ = 1221041431213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221041431349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67835635066 + ... + 67835635083.

Almost surely, 2^{1221041431341} is an apocalyptic number.

It is an amenable number.

1221041431341 is a deficient number, since it is larger than the sum of its proper divisors (542685080609).

1221041431341 is a wasteful number, since it uses less digits than its factorization.

1221041431341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135671270155 (or 135671270152 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1221041431341 its reverse (1431341401221), we get a palindrome (2652382832562).

The spelling of 1221041431341 in words is "one trillion, two hundred twenty-one billion, forty-one million, four hundred thirty-one thousand, three hundred forty-one".