1213532322401 has 16 divisors (see below), whose sum is σ = 1451847241728. Its totient is φ = 991746531600.

The previous prime is 1213532322383. The next prime is 1213532322461. The reversal of 1213532322401 is 1042232353121.

It is not a de Polignac number, because 1213532322401 - 2¹⁴ = 1213532306017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1213532322461) 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, 12068045 + ... + 12168186.

It is an arithmetic number, because the mean of its divisors is an integer number (90740452608).

Almost surely, 2^{1213532322401} is an apocalyptic number.

It is an amenable number.

1213532322401 is a deficient number, since it is larger than the sum of its proper divisors (238314919327).

1213532322401 is a wasteful number, since it uses less digits than its factorization.

1213532322401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24236572.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1213532322401 its reverse (1042232353121), we get a palindrome (2255764675522).

The spelling of 1213532322401 in words is "one trillion, two hundred thirteen billion, five hundred thirty-two million, three hundred twenty-two thousand, four hundred one".