2123203231212 has 144 divisors (see below), whose sum is σ = 5834179814400. Its totient is φ = 600727532832.

The previous prime is 2123203231199. The next prime is 2123203231213. The reversal of 2123203231212 is 2121323023212.

It is a super-2 number, since 2×2123203231212² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123203231213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43642333 + ... + 43690955.

It is an arithmetic number, because the mean of its divisors is an integer number (40515137600).

Almost surely, 2^{2123203231212} 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 2123203231212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2917089907200).

2123203231212 is an abundant number, since it is smaller than the sum of its proper divisors (3710976583188).

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

2123203231212 is a wasteful number, since it uses less digits than its factorization.

2123203231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48857 (or 48738 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2123203231212 its reverse (2121323023212), we get a palindrome (4244526254424).

The spelling of 2123203231212 in words is "two trillion, one hundred twenty-three billion, two hundred three million, two hundred thirty-one thousand, two hundred twelve".