221535132110 has 16 divisors (see below), whose sum is σ = 398771187696. Its totient is φ = 88612286208.

The previous prime is 221535132061. The next prime is 221535132127. The reversal of 221535132110 is 11231535122.

It is a self number, because there is not a number n which added to its sum of digits gives 221535132110.

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, 384989 + ... + 768951.

It is an arithmetic number, because the mean of its divisors is an integer number (24923199231).

Almost surely, 2^221535132110 is an apocalyptic number.

221535132110 is a deficient number, since it is larger than the sum of its proper divisors (177236055586).

221535132110 is a wasteful number, since it uses less digits than its factorization.

221535132110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441667.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 221535132110 its reverse (11231535122), we get a palindrome (232766667232).

The spelling of 221535132110 in words is "two hundred twenty-one billion, five hundred thirty-five million, one hundred thirty-two thousand, one hundred ten".