200121110212 has 24 divisors (see below), whose sum is σ = 357692290200. Its totient is φ = 97932546816.

The previous prime is 200121110141. The next prime is 200121110243. The reversal of 200121110212 is 212011121002.

It can be written as a sum of positive squares in 4 ways, for example, as 147691101636 + 52430008576 = 384306^2 + 228976^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200121110192 and 200121110201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067287 + ... + 1240702.

It is an arithmetic number, because the mean of its divisors is an integer number (14903845425).

Almost surely, 2^200121110212 is an apocalyptic number.

It is an amenable number.

200121110212 is a deficient number, since it is larger than the sum of its proper divisors (157571179988).

200121110212 is a wasteful number, since it uses less digits than its factorization.

200121110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308455 (or 2308453 counting only the distinct ones).

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

Adding to 200121110212 its reverse (212011121002), we get a palindrome (412132231214).

The spelling of 200121110212 in words is "two hundred billion, one hundred twenty-one million, one hundred ten thousand, two hundred twelve".