201232121232 has 80 divisors (see below), whose sum is σ = 527742150912. Its totient is φ = 66059495040.

The previous prime is 201232121231. The next prime is 201232121243. The reversal of 201232121232 is 232121232102.

It is a junction number, because it is equal to n+sod(n) for n = 201232121199 and 201232121208.

It is not an unprimeable number, because it can be changed into a prime (201232121231) 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, 24267007 + ... + 24275297.

Almost surely, 2^201232121232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201232121232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263871075456).

201232121232 is an abundant number, since it is smaller than the sum of its proper divisors (326510029680).

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

201232121232 is a wasteful number, since it uses less digits than its factorization.

201232121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15916 (or 15910 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 201232121232 its reverse (232121232102), we get a palindrome (433353353334).

The spelling of 201232121232 in words is "two hundred one billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred thirty-two".