201000212120 has 16 divisors (see below), whose sum is σ = 452250477360. Its totient is φ = 80400084832.

The previous prime is 201000212117. The next prime is 201000212137. The reversal of 201000212120 is 21212000102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512502612 + ... + 2512502691.

It is an arithmetic number, because the mean of its divisors is an integer number (28265654835).

Almost surely, 2^201000212120 is an apocalyptic number.

201000212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000212120 is an abundant number, since it is smaller than the sum of its proper divisors (251250265240).

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

201000212120 is a wasteful number, since it uses less digits than its factorization.

201000212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025005314 (or 5025005310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201000212120 its reverse (21212000102), we get a palindrome (222212212222).

The spelling of 201000212120 in words is "two hundred one billion, two hundred twelve thousand, one hundred twenty".