221646443376230 has 16 divisors (see below), whose sum is σ = 408241821289104. Its totient is φ = 86596749970080.

The previous prime is 221646443376227. The next prime is 221646443376247. The reversal of 221646443376230 is 32673344646122.

221646443376230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221646443376230² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257728422101 + ... + 257728422960.

It is an arithmetic number, because the mean of its divisors is an integer number (25515113830569).

Almost surely, 2^{221646443376230} is an apocalyptic number.

221646443376230 is a deficient number, since it is larger than the sum of its proper divisors (186595377912874).

221646443376230 is a wasteful number, since it uses less digits than its factorization.

221646443376230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515456845111.

The product of its (nonzero) digits is 20901888, while the sum is 53.

The spelling of 221646443376230 in words is "two hundred twenty-one trillion, six hundred forty-six billion, four hundred forty-three million, three hundred seventy-six thousand, two hundred thirty".