221212001121110 has 8 divisors (see below), whose sum is σ = 398181602018016. Its totient is φ = 88484800448440.

The previous prime is 221212001121101. The next prime is 221212001121113. The reversal of 221212001121110 is 11121100212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212001121113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11060600056046 + ... + 11060600056065.

It is an arithmetic number, because the mean of its divisors is an integer number (49772700252252).

Almost surely, 2^{221212001121110} is an apocalyptic number.

221212001121110 is a deficient number, since it is larger than the sum of its proper divisors (176969600896906).

221212001121110 is a wasteful number, since it uses less digits than its factorization.

221212001121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121200112118.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221212001121110 its reverse (11121100212122), we get a palindrome (232333101333232).

The spelling of 221212001121110 in words is "two hundred twenty-one trillion, two hundred twelve billion, one million, one hundred twenty-one thousand, one hundred ten".