1213421125532 has 48 divisors (see below), whose sum is σ = 2703793333248. Its totient is φ = 462702717120.

The previous prime is 1213421125523. The next prime is 1213421125547. The reversal of 1213421125532 is 2355211243121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41897003 + ... + 41925954.

It is an arithmetic number, because the mean of its divisors is an integer number (56329027776).

Almost surely, 2^{1213421125532} is an apocalyptic number.

It is an amenable number.

1213421125532 is an abundant number, since it is smaller than the sum of its proper divisors (1490372207716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213421125532 is a wasteful number, since it uses less digits than its factorization.

1213421125532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83823026 (or 83823024 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 1213421125532 its reverse (2355211243121), we get a palindrome (3568632368653).

The spelling of 1213421125532 in words is "one trillion, two hundred thirteen billion, four hundred twenty-one million, one hundred twenty-five thousand, five hundred thirty-two".