202221012220 has 48 divisors (see below), whose sum is σ = 451574349408. Its totient is φ = 75803494400.

The previous prime is 202221012193. The next prime is 202221012239. The reversal of 202221012220 is 22210122202.

It is a junction number, because it is equal to n+sod(n) for n = 202221012194 and 202221012203.

It is a congruent number.

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, 1197106 + ... + 1355545.

It is an arithmetic number, because the mean of its divisors is an integer number (9407798946).

Almost surely, 2^202221012220 is an apocalyptic number.

202221012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221012220 is an abundant number, since it is smaller than the sum of its proper divisors (249353337188).

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

202221012220 is a wasteful number, since it uses less digits than its factorization.

202221012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552910 (or 2552908 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202221012220 its reverse (22210122202), we get a palindrome (224431134422).

The spelling of 202221012220 in words is "two hundred two billion, two hundred twenty-one million, twelve thousand, two hundred twenty".