21202203222 has 32 divisors (see below), whose sum is σ = 47888408160. Its totient is φ = 6951540960.

The previous prime is 21202203193. The next prime is 21202203247. The reversal of 21202203222 is 22230220212.

21202203222 is a `hidden beast` number, since 2 + 120 + 220 + 322 + 2 = 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 = 21202203195 and 21202203204.

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, 3215013 + ... + 3221600.

It is an arithmetic number, because the mean of its divisors is an integer number (1496512755).

Almost surely, 2^21202203222 is an apocalyptic number.

21202203222 is an abundant number, since it is smaller than the sum of its proper divisors (26686204938).

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

21202203222 is a wasteful number, since it uses less digits than its factorization.

21202203222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436685 (or 6436679 counting only the distinct ones).

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

Adding to 21202203222 its reverse (22230220212), we get a palindrome (43432423434).

The spelling of 21202203222 in words is "twenty-one billion, two hundred two million, two hundred three thousand, two hundred twenty-two".