2111212220001 has 8 divisors (see below), whose sum is σ = 2843969726304. Its totient is φ = 1392964763520.

The previous prime is 2111212219997. The next prime is 2111212220017. The reversal of 2111212220001 is 1000222121112.

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

It is not a de Polignac number, because 2111212220001 - 2² = 2111212219997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111212220021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3627512115 + ... + 3627512696.

It is an arithmetic number, because the mean of its divisors is an integer number (355496215788).

Almost surely, 2^{2111212220001} is an apocalyptic number.

It is an amenable number.

2111212220001 is a deficient number, since it is larger than the sum of its proper divisors (732757506303).

2111212220001 is an equidigital number, since it uses as much as digits as its factorization.

2111212220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255024911.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2111212220001 its reverse (1000222121112), we get a palindrome (3111434341113).

The spelling of 2111212220001 in words is "two trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty thousand, one".