231201122021200 has 120 divisors (see below), whose sum is σ = 559017982800288. Its totient is φ = 91888225328640.

The previous prime is 231201122021171. The next prime is 231201122021329. The reversal of 231201122021200 is 2120221102132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2793491019 + ... + 2793573781.

Almost surely, 2^{231201122021200} is an apocalyptic number.

231201122021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231201122021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279508991400144).

231201122021200 is an abundant number, since it is smaller than the sum of its proper divisors (327816860779088).

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

231201122021200 is a wasteful number, since it uses less digits than its factorization.

231201122021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127421 (or 127410 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 231201122021200 its reverse (2120221102132), we get a palindrome (233321343123332).

The spelling of 231201122021200 in words is "two hundred thirty-one trillion, two hundred one billion, one hundred twenty-two million, twenty-one thousand, two hundred".