201121000221200 has 30 divisors (see below), whose sum is σ = 483193203032394. Its totient is φ = 80448400088320.

The previous prime is 201121000221199. The next prime is 201121000221221. The reversal of 201121000221200 is 2122000121102.

It can be written as a sum of positive squares in 3 ways, for example, as 63547618248976 + 137573381972224 = 7971676^2 + 11729168^2 .

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, 251401249877 + ... + 251401250676.

Almost surely, 2^{201121000221200} is an apocalyptic number.

201121000221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121000221200 is an abundant number, since it is smaller than the sum of its proper divisors (282072202811194).

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

201121000221200 is a wasteful number, since it uses less digits than its factorization.

201121000221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502802500571 (or 502802500560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201121000221200 its reverse (2122000121102), we get a palindrome (203243000342302).

The spelling of 201121000221200 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-one thousand, two hundred".