2121529877532 has 72 divisors (see below), whose sum is σ = 5809449223760. Its totient is φ = 652778399520.

The previous prime is 2121529877527. The next prime is 2121529877539. The reversal of 2121529877532 is 2357789251212.

It is a happy number.

2121529877532 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 5 + 29 + 87 + 7 + 532 = 666.

It is a super-2 number, since 2×2121529877532² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121529877539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13332694 + ... + 13490877.

Almost surely, 2^{2121529877532} is an apocalyptic number.

It is an amenable number.

2121529877532 is an abundant number, since it is smaller than the sum of its proper divisors (3687919346228).

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

2121529877532 is a wasteful number, since it uses less digits than its factorization.

2121529877532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26823620 (or 26823589 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 2121529877532 in words is "two trillion, one hundred twenty-one billion, five hundred twenty-nine million, eight hundred seventy-seven thousand, five hundred thirty-two".