2111212100001 has 32 divisors (see below), whose sum is σ = 2896143667200. Its totient is φ = 1367325682560.

The previous prime is 2111212099981. The next prime is 2111212100017. The reversal of 2111212100001 is 1000012121112.

It is not a de Polignac number, because 2111212100001 - 2¹⁸ = 2111211837857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111212100001.

It is not an unprimeable number, because it can be changed into a prime (2111212101001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127796820 + ... + 127813338.

It is an arithmetic number, because the mean of its divisors is an integer number (90504489600).

Almost surely, 2^{2111212100001} is an apocalyptic number.

It is an amenable number.

2111212100001 is a deficient number, since it is larger than the sum of its proper divisors (784931567199).

2111212100001 is a wasteful number, since it uses less digits than its factorization.

2111212100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23229.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111212100001 its reverse (1000012121112), we get a palindrome (3111224221113).

The spelling of 2111212100001 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred thousand, one".