201211231030100 has 72 divisors (see below), whose sum is σ = 437544688056000. Its totient is φ = 80315616602880.

The previous prime is 201211231030093. The next prime is 201211231030133. The reversal of 201211231030100 is 1030132112102.

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, 543874784 + ... + 544244616.

Almost surely, 2^{201211231030100} is an apocalyptic number.

201211231030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211231030100 is an abundant number, since it is smaller than the sum of its proper divisors (236333457025900).

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

201211231030100 is a wasteful number, since it uses less digits than its factorization.

201211231030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381249 (or 381242 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 201211231030100 its reverse (1030132112102), we get a palindrome (202241363142202).

The spelling of 201211231030100 in words is "two hundred one trillion, two hundred eleven billion, two hundred thirty-one million, thirty thousand, one hundred".