222561836020 has 12 divisors (see below), whose sum is σ = 467379855684. Its totient is φ = 89024734400.

The previous prime is 222561835999. The next prime is 222561836023. The reversal of 222561836020 is 20638165222.

It can be written as a sum of positive squares in 2 ways, for example, as 69464927844 + 153096908176 = 263562^2 + 391276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222561836023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5564045881 + ... + 5564045920.

It is an arithmetic number, because the mean of its divisors is an integer number (38948321307).

Almost surely, 2^222561836020 is an apocalyptic number.

222561836020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222561836020 is an abundant number, since it is smaller than the sum of its proper divisors (244818019664).

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

222561836020 is a wasteful number, since it uses less digits than its factorization.

222561836020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11128091810 (or 11128091808 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 222561836020 in words is "two hundred twenty-two billion, five hundred sixty-one million, eight hundred thirty-six thousand, twenty".