221642062555452 has 48 divisors (see below), whose sum is σ = 644776909254912. Its totient is φ = 57569366897280.

The previous prime is 221642062555427. The next prime is 221642062555621. The reversal of 221642062555452 is 254555260246122.

It is a junction number, because it is equal to n+sod(n) for n = 221642062555395 and 221642062555404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119936180113 + ... + 119936181960.

It is an arithmetic number, because the mean of its divisors is an integer number (13432852276144).

Almost surely, 2^{221642062555452} is an apocalyptic number.

221642062555452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221642062555452 is an abundant number, since it is smaller than the sum of its proper divisors (423134846699460).

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

221642062555452 is a wasteful number, since it uses less digits than its factorization.

221642062555452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239872362098 (or 239872362096 counting only the distinct ones).

The product of its (nonzero) digits is 11520000, while the sum is 51.

The spelling of 221642062555452 in words is "two hundred twenty-one trillion, six hundred forty-two billion, sixty-two million, five hundred fifty-five thousand, four hundred fifty-two".