22026220420 has 24 divisors (see below), whose sum is σ = 46355418648. Its totient is φ = 8791372800.

The previous prime is 22026220387. The next prime is 22026220429. The reversal of 22026220420 is 2402262022.

It can be written as a sum of positive squares in 4 ways, for example, as 6903615744 + 15122604676 = 83088^2 + 122974^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22026220391 and 22026220400.

It is not an unprimeable number, because it can be changed into a prime (22026220429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185261 + ... + 1203700.

It is an arithmetic number, because the mean of its divisors is an integer number (1931475777).

Almost surely, 2^22026220420 is an apocalyptic number.

22026220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22026220420 is an abundant number, since it is smaller than the sum of its proper divisors (24329198228).

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

22026220420 is a wasteful number, since it uses less digits than its factorization.

22026220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389431 (or 2389429 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22026220420 its reverse (2402262022), we get a palindrome (24428482442).

The spelling of 22026220420 in words is "twenty-two billion, twenty-six million, two hundred twenty thousand, four hundred twenty".