1201122430421 has 16 divisors (see below), whose sum is σ = 1275068185776. Its totient is φ = 1127544385536.

The previous prime is 1201122430397. The next prime is 1201122430423. The reversal of 1201122430421 is 1240342211021.

It can be written as a sum of positive squares in 8 ways, for example, as 275928533521 + 925193896900 = 525289^2 + 961870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201122430421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122430423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20301935 + ... + 20361011.

It is an arithmetic number, because the mean of its divisors is an integer number (79691761611).

Almost surely, 2^{1201122430421} is an apocalyptic number.

It is an amenable number.

1201122430421 is a deficient number, since it is larger than the sum of its proper divisors (73945755355).

1201122430421 is a wasteful number, since it uses less digits than its factorization.

1201122430421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62168.

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

Adding to 1201122430421 its reverse (1240342211021), we get a palindrome (2441464641442).

The spelling of 1201122430421 in words is "one trillion, two hundred one billion, one hundred twenty-two million, four hundred thirty thousand, four hundred twenty-one".