22222212212020 has 12 divisors (see below), whose sum is σ = 46666645645284. Its totient is φ = 8888884884800.

The previous prime is 22222212212017. The next prime is 22222212212059. The reversal of 22222212212020 is 2021221222222.

It can be written as a sum of positive squares in 2 ways, for example, as 14596097994256 + 7626114217764 = 3820484^2 + 2761542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22222212211982 and 22222212212000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555555305281 + ... + 555555305320.

It is an arithmetic number, because the mean of its divisors is an integer number (3888887137107).

Almost surely, 2^{22222212212020} is an apocalyptic number.

22222212212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222212212020 is an abundant number, since it is smaller than the sum of its proper divisors (24444433433264).

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

22222212212020 is a wasteful number, since it uses less digits than its factorization.

22222212212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111110610610 (or 1111110610608 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22222212212020 its reverse (2021221222222), we get a palindrome (24243433434242).

The spelling of 22222212212020 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twelve thousand, twenty".