1221431525041 has 32 divisors (see below), whose sum is σ = 1582832966400. Its totient is φ = 915305702400.

The previous prime is 1221431525033. The next prime is 1221431525077. The reversal of 1221431525041 is 1405251341221.

It is a cyclic number.

It is not a de Polignac number, because 1221431525041 - 2³ = 1221431525033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221431524994 and 1221431525012.

It is not an unprimeable number, because it can be changed into a prime (1221431525081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6703341 + ... + 6883141.

It is an arithmetic number, because the mean of its divisors is an integer number (49463530200).

Almost surely, 2^{1221431525041} is an apocalyptic number.

It is an amenable number.

1221431525041 is a deficient number, since it is larger than the sum of its proper divisors (361401441359).

1221431525041 is a wasteful number, since it uses less digits than its factorization.

1221431525041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183769.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 1221431525041 its reverse (1405251341221), we get a palindrome (2626682866262).

The spelling of 1221431525041 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-one million, five hundred twenty-five thousand, forty-one".