203211322220 has 24 divisors (see below), whose sum is σ = 427212249408. Its totient is φ = 81195296000.

The previous prime is 203211322219. The next prime is 203211322273. The reversal of 203211322220 is 22223112302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 203211322192 and 203211322201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5558381 + ... + 5594820.

It is an arithmetic number, because the mean of its divisors is an integer number (17800510392).

Almost surely, 2^203211322220 is an apocalyptic number.

203211322220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203211322220 is an abundant number, since it is smaller than the sum of its proper divisors (224000927188).

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

203211322220 is a wasteful number, since it uses less digits than its factorization.

203211322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11154121 (or 11154119 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203211322220 its reverse (22223112302), we get a palindrome (225434434522).

The spelling of 203211322220 in words is "two hundred three billion, two hundred eleven million, three hundred twenty-two thousand, two hundred twenty".