202220121228 has 24 divisors (see below), whose sum is σ = 473872050288. Its totient is φ = 67117406976.

The previous prime is 202220121221. The next prime is 202220121253. The reversal of 202220121228 is 822121022202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202220121198 and 202220121207.

It is not an unprimeable number, because it can be changed into a prime (202220121221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36159601 + ... + 36165192.

It is an arithmetic number, because the mean of its divisors is an integer number (19744668762).

Almost surely, 2^202220121228 is an apocalyptic number.

It is an amenable number.

202220121228 is an abundant number, since it is smaller than the sum of its proper divisors (271651929060).

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

202220121228 is a wasteful number, since it uses less digits than its factorization.

202220121228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72325033 (or 72325031 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The spelling of 202220121228 in words is "two hundred two billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-eight".