22311203420 has 24 divisors (see below), whose sum is σ = 51112939248. Its totient is φ = 8113164800.

The previous prime is 22311203417. The next prime is 22311203437. The reversal of 22311203420 is 2430211322.

It is a super-3 number, since 3×22311203420³ (a number of 32 digits) contains 333 as substring.

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 = 22311203392 and 22311203401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50707061 + ... + 50707500.

It is an arithmetic number, because the mean of its divisors is an integer number (2129705802).

Almost surely, 2^22311203420 is an apocalyptic number.

22311203420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22311203420 is an abundant number, since it is smaller than the sum of its proper divisors (28801735828).

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

22311203420 is a wasteful number, since it uses less digits than its factorization.

22311203420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101414581 (or 101414579 counting only the distinct ones).

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

Adding to 22311203420 its reverse (2430211322), we get a palindrome (24741414742).

The spelling of 22311203420 in words is "twenty-two billion, three hundred eleven million, two hundred three thousand, four hundred twenty".