2121112220009 has 8 divisors (see below), whose sum is σ = 2240454619392. Its totient is φ = 2004952284720.

The previous prime is 2121112219987. The next prime is 2121112220011. The reversal of 2121112220009 is 9000222111212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121112220009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121112220069) 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, 795614654 + ... + 795617319.

It is an arithmetic number, because the mean of its divisors is an integer number (280056827424).

Almost surely, 2^{2121112220009} is an apocalyptic number.

It is an amenable number.

2121112220009 is a deficient number, since it is larger than the sum of its proper divisors (119342399383).

2121112220009 is a wasteful number, since it uses less digits than its factorization.

2121112220009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591232047.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 2121112220009 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, nine".