200121220228 has 48 divisors (see below), whose sum is σ = 389325121920. Its totient is φ = 89570105856.

The previous prime is 200121220193. The next prime is 200121220231. The reversal of 200121220228 is 822022121002.

It is a junction number, because it is equal to n+sod(n) for n = 200121220199 and 200121220208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625200 + ... + 889447.

It is an arithmetic number, because the mean of its divisors is an integer number (8110940040).

Almost surely, 2^200121220228 is an apocalyptic number.

It is an amenable number.

200121220228 is a deficient number, since it is larger than the sum of its proper divisors (189203901692).

200121220228 is a wasteful number, since it uses less digits than its factorization.

200121220228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514764 (or 1514762 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 200121220228 in words is "two hundred billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-eight".