201021102112 has 36 divisors (see below), whose sum is σ = 399882958650.
Its totient is φ = 99474210816.
The previous prime is 201021102103. The next prime is 201021102187. The reversal of 201021102112 is 211201120102.
Adding to 201021102112 its reverse (211201120102), we get a palindrome (412222222214).
It can be written as a sum of positive squares in 3 ways, for example, as 158120750736 + 42900351376 = 397644^2 + 207124^2
It is a junction number, because it is equal to n+sod(n) for n = 201021102092 and 201021102101.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32737 + ... + 634912.
Almost surely, 2201021102112 is an apocalyptic number.
It is an amenable number.
201021102112 is a deficient number, since it is larger than the sum of its proper divisors (198861856538).
201021102112 is an frugal number, since it uses more digits than its factorization.
201021102112 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 667853 (or 667748 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 13.
The spelling of 201021102112 in words is "two hundred one billion, twenty-one million, one hundred two thousand, one hundred twelve".