221340623632 has 10 divisors (see below), whose sum is σ = 428847458318. Its totient is φ = 110670311808.

The previous prime is 221340623617. The next prime is 221340623657. The reversal of 221340623632 is 236326043122.

It can be written as a sum of positive squares in only one way, i.e., 112939012096 + 108401611536 = 336064^2 + 329244^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6916894473 + ... + 6916894504.

Almost surely, 2^221340623632 is an apocalyptic number.

It is an amenable number.

221340623632 is a deficient number, since it is larger than the sum of its proper divisors (207506834686).

221340623632 is a wasteful number, since it uses less digits than its factorization.

221340623632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13833788985 (or 13833788979 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 221340623632 its reverse (236326043122), we get a palindrome (457666666754).

The spelling of 221340623632 in words is "two hundred twenty-one billion, three hundred forty million, six hundred twenty-three thousand, six hundred thirty-two".