22012040420 has 24 divisors (see below), whose sum is σ = 47716424448. Its totient is φ = 8520789600.

The previous prime is 22012040399. The next prime is 22012040441. The reversal of 22012040420 is 2404021022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22012040399) and next prime (22012040441).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17751026 + ... + 17752265.

It is an arithmetic number, because the mean of its divisors is an integer number (1988184352).

Almost surely, 2^22012040420 is an apocalyptic number.

22012040420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012040420 is an abundant number, since it is smaller than the sum of its proper divisors (25704384028).

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

22012040420 is a wasteful number, since it uses less digits than its factorization.

22012040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35503331 (or 35503329 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22012040420 its reverse (2404021022), we get a palindrome (24416061442).

The spelling of 22012040420 in words is "twenty-two billion, twelve million, forty thousand, four hundred twenty".