201201210210100 has 18 divisors (see below), whose sum is σ = 436606626156134. Its totient is φ = 80480484084000.

The previous prime is 201201210210097. The next prime is 201201210210151. The reversal of 201201210210100 is 1012012102102.

It can be written as a sum of positive squares in 3 ways, for example, as 360898159504 + 200840312050596 = 600748^2 + 14171814^2 .

It is a super-2 number, since 2×201201210210100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006006050951 + ... + 1006006051150.

Almost surely, 2^{201201210210100} is an apocalyptic number.

201201210210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201201210210100 is an abundant number, since it is smaller than the sum of its proper divisors (235405415946034).

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

201201210210100 is a wasteful number, since it uses less digits than its factorization.

201201210210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012012102115 (or 2012012102108 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201201210210100 its reverse (1012012102102), we get a palindrome (202213222312202).

The spelling of 201201210210100 in words is "two hundred one trillion, two hundred one billion, two hundred ten million, two hundred ten thousand, one hundred".