221212404212122 has 8 divisors (see below), whose sum is σ = 331822996667136. Its totient is φ = 110604738656412.

The previous prime is 221212404212077. The next prime is 221212404212207.

It is a happy number.

221212404212122 is nontrivially palindromic in base 10.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731535868 + ... + 731838199.

It is an arithmetic number, because the mean of its divisors is an integer number (41477874583392).

Almost surely, 2^{221212404212122} is an apocalyptic number.

221212404212122 is a deficient number, since it is larger than the sum of its proper divisors (110610592455014).

221212404212122 is a wasteful number, since it uses less digits than its factorization.

221212404212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463449652.

The product of its (nonzero) digits is 4096, while the sum is 28.

It can be divided in two parts, 22121240 and 4212122, that added together give a palindrome (26333362).

The spelling of 221212404212122 in words is "two hundred twenty-one trillion, two hundred twelve billion, four hundred four million, two hundred twelve thousand, one hundred twenty-two".