22422000420 has 120 divisors (see below), whose sum is σ = 70470020544. Its totient is φ = 5968033344.

The previous prime is 22422000329. The next prime is 22422000437. The reversal of 22422000420 is 2400022422.

22422000420 is a `hidden beast` number, since 2 + 2 + 42 + 200 + 0 + 420 = 666.

It is a super-2 number, since 2×22422000420² (a number of 22 digits) contains 22 as substring.

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 = 22422000393 and 22422000402.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 873489 + ... + 898791.

Almost surely, 2^22422000420 is an apocalyptic number.

22422000420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22422000420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35235010272).

22422000420 is an abundant number, since it is smaller than the sum of its proper divisors (48048020124).

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

22422000420 is a wasteful number, since it uses less digits than its factorization.

22422000420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25871 (or 25860 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22422000420 its reverse (2400022422), we get a palindrome (24822022842).

The spelling of 22422000420 in words is "twenty-two billion, four hundred twenty-two million, four hundred twenty", and thus it is an aban number.