221212020011210 has 16 divisors (see below), whose sum is σ = 398193134481792. Its totient is φ = 88482252790800.

The previous prime is 221212020011183. The next prime is 221212020011219. The reversal of 221212020011210 is 12110020212122.

It is not an unprimeable number, because it can be changed into a prime (221212020011219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319038086 + ... + 319730705.

It is an arithmetic number, because the mean of its divisors is an integer number (24887070905112).

Almost surely, 2^{221212020011210} is an apocalyptic number.

221212020011210 is a deficient number, since it is larger than the sum of its proper divisors (176981114470582).

221212020011210 is a wasteful number, since it uses less digits than its factorization.

221212020011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638803429.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221212020011210 its reverse (12110020212122), we get a palindrome (233322040223332).

The spelling of 221212020011210 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty million, eleven thousand, two hundred ten".