201100212126 has 48 divisors (see below), whose sum is σ = 481054654080. Its totient is φ = 60205242960.

The previous prime is 201100212121. The next prime is 201100212149. The reversal of 201100212126 is 621212001102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201100212099 and 201100212108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201100212121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6101986 + ... + 6134853.

It is an arithmetic number, because the mean of its divisors is an integer number (10021971960).

Almost surely, 2^201100212126 is an apocalyptic number.

201100212126 is an abundant number, since it is smaller than the sum of its proper divisors (279954441954).

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

201100212126 is a wasteful number, since it uses less digits than its factorization.

201100212126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236941 (or 12236938 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201100212126 its reverse (621212001102), we get a palindrome (822312213228).

The spelling of 201100212126 in words is "two hundred one billion, one hundred million, two hundred twelve thousand, one hundred twenty-six".