221112210220210 has 64 divisors (see below), whose sum is σ = 399090295562112. Its totient is φ = 88203422601216.

The previous prime is 221112210220147. The next prime is 221112210220249. The reversal of 221112210220210 is 12022012211122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41539018609 + ... + 41539023931.

It is an arithmetic number, because the mean of its divisors is an integer number (6235785868158).

Almost surely, 2^{221112210220210} is an apocalyptic number.

221112210220210 is a deficient number, since it is larger than the sum of its proper divisors (177978085341902).

221112210220210 is a wasteful number, since it uses less digits than its factorization.

221112210220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221112210220210 its reverse (12022012211122), we get a palindrome (233134222431332).

The spelling of 221112210220210 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred ten million, two hundred twenty thousand, two hundred ten".