202021221222 has 24 divisors (see below), whose sum is σ = 449542718976. Its totient is φ = 65520395856.

The previous prime is 202021221167. The next prime is 202021221253. The reversal of 202021221222 is 222122120202.

202021221222 is a `hidden beast` number, since 20 + 202 + 1 + 221 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202021221195 and 202021221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151666918 + ... + 151668249.

It is an arithmetic number, because the mean of its divisors is an integer number (18730946624).

Almost surely, 2^202021221222 is an apocalyptic number.

202021221222 is an abundant number, since it is smaller than the sum of its proper divisors (247521497754).

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

202021221222 is a wasteful number, since it uses less digits than its factorization.

202021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303335212 (or 303335209 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202021221222 its reverse (222122120202), we get a palindrome (424143341424).

The spelling of 202021221222 in words is "two hundred two billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".