2121212000001 has 8 divisors (see below), whose sum is σ = 2829606157984. Its totient is φ = 1413479587680.

The previous prime is 2121211999997. The next prime is 2121212000003. The reversal of 2121212000001 is 1000002121212.

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

It is not a de Polignac number, because 2121212000001 - 2² = 2121211999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121212000003) 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, 165428935 + ... + 165441756.

It is an arithmetic number, because the mean of its divisors is an integer number (353700769748).

Almost surely, 2^{2121212000001} is an apocalyptic number.

It is an amenable number.

2121212000001 is a deficient number, since it is larger than the sum of its proper divisors (708394157983).

2121212000001 is a wasteful number, since it uses less digits than its factorization.

2121212000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330872831.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121212000001 its reverse (1000002121212), we get a palindrome (3121214121213).

It can be divided in two parts, 212121 and 2000001, that added together give a palindrome (2212122).

The spelling of 2121212000001 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, one", and thus it is an aban number.