221112122222210 has 32 divisors (see below), whose sum is σ = 398074495133952. Its totient is φ = 88428700408320.

The previous prime is 221112122222209. The next prime is 221112122222227. The reversal of 221112122222210 is 12222221211122.

It is a super-3 number, since 3×221112122222210³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294732247 + ... + 1294903013.

It is an arithmetic number, because the mean of its divisors is an integer number (12439827972936).

Almost surely, 2^{221112122222210} is an apocalyptic number.

221112122222210 is a deficient number, since it is larger than the sum of its proper divisors (176962372911742).

221112122222210 is a wasteful number, since it uses less digits than its factorization.

221112122222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193658.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 221112122222210 its reverse (12222221211122), we get a palindrome (233334343433332).

The spelling of 221112122222210 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ten".