201212403100 has 36 divisors (see below), whose sum is σ = 438457874400. Its totient is φ = 80148194560.

The previous prime is 201212403037. The next prime is 201212403107. The reversal of 201212403100 is 1304212102.

It is a super-2 number, since 2×201212403100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212403107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4185565 + ... + 4233364.

It is an arithmetic number, because the mean of its divisors is an integer number (12179385400).

Almost surely, 2^201212403100 is an apocalyptic number.

201212403100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212403100 is an abundant number, since it is smaller than the sum of its proper divisors (237245471300).

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

201212403100 is a wasteful number, since it uses less digits than its factorization.

201212403100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419182 (or 8419175 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201212403100 its reverse (1304212102), we get a palindrome (202516615202).

The spelling of 201212403100 in words is "two hundred one billion, two hundred twelve million, four hundred three thousand, one hundred".