201232122100 has 36 divisors (see below), whose sum is σ = 455659523424. Its totient is φ = 76993158880.

The previous prime is 201232122053. The next prime is 201232122107. The reversal of 201232122100 is 1221232102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201232122107) 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, 43743814 + ... + 43748413.

It is an arithmetic number, because the mean of its divisors is an integer number (12657208984).

Almost surely, 2^201232122100 is an apocalyptic number.

201232122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201232122100 is an abundant number, since it is smaller than the sum of its proper divisors (254427401324).

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

201232122100 is a wasteful number, since it uses less digits than its factorization.

201232122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87492264 (or 87492257 counting only the distinct ones).

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

Adding to 201232122100 its reverse (1221232102), we get a palindrome (202453354202).

The spelling of 201232122100 in words is "two hundred one billion, two hundred thirty-two million, one hundred twenty-two thousand, one hundred".