202312202220 has 72 divisors (see below), whose sum is σ = 614422854864. Its totient is φ = 53884645248.

The previous prime is 202312202207. The next prime is 202312202327. The reversal of 202312202220 is 22202213202.

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 = 202312202193 and 202312202202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530679 + ... + 828398.

It is an arithmetic number, because the mean of its divisors is an integer number (8533650762).

Almost surely, 2^202312202220 is an apocalyptic number.

202312202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202312202220 is an abundant number, since it is smaller than the sum of its proper divisors (412110652644).

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

202312202220 is a wasteful number, since it uses less digits than its factorization.

202312202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359919 (or 1359914 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 202312202220 its reverse (22202213202), we get a palindrome (224514415422).

The spelling of 202312202220 in words is "two hundred two billion, three hundred twelve million, two hundred two thousand, two hundred twenty".