221354744074760 has 16 divisors (see below), whose sum is σ = 498048174168300. Its totient is φ = 88541897629888.

The previous prime is 221354744074631. The next prime is 221354744074813. The reversal of 221354744074760 is 67470447453122.

It can be written as a sum of positive squares in 2 ways, for example, as 217749629220964 + 3605114853796 = 14756342^2 + 1898714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221354744074696 and 221354744074705.

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, 2766934300895 + ... + 2766934300974.

Almost surely, 2^{221354744074760} is an apocalyptic number.

221354744074760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221354744074760 is an abundant number, since it is smaller than the sum of its proper divisors (276693430093540).

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

221354744074760 is a wasteful number, since it uses less digits than its factorization.

221354744074760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533868601880 (or 5533868601876 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 56.

The spelling of 221354744074760 in words is "two hundred twenty-one trillion, three hundred fifty-four billion, seven hundred forty-four million, seventy-four thousand, seven hundred sixty".