221212000212001 has 8 divisors (see below), whose sum is σ = 226191817077120. Its totient is φ = 216243565787088.

The previous prime is 221212000211999. The next prime is 221212000212037. The reversal of 221212000212001 is 100212000212122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221212000212001 - 2¹ = 221212000211999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212000212061) 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, 2845570746 + ... + 2845648483.

It is an arithmetic number, because the mean of its divisors is an integer number (28273977134640).

Almost surely, 2^{221212000212001} is an apocalyptic number.

It is an amenable number.

221212000212001 is a deficient number, since it is larger than the sum of its proper divisors (4979816865119).

221212000212001 is an equidigital number, since it uses as much as digits as its factorization.

221212000212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691220103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221212000212001 its reverse (100212000212122), we get a palindrome (321424000424123).

The spelling of 221212000212001 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred twelve thousand, one".