2111021000001 has 8 divisors (see below), whose sum is σ = 3127438518560. Its totient is φ = 1407347333316.

The previous prime is 2111020999987. The next prime is 2111021000009. The reversal of 2111021000001 is 1000001201112.

It is a happy number.

It is not a de Polignac number, because 2111021000001 - 2²² = 2111016805697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2111021000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39092981455 + ... + 39092981508.

It is an arithmetic number, because the mean of its divisors is an integer number (390929814820).

Almost surely, 2^{2111021000001} is an apocalyptic number.

It is an amenable number.

2111021000001 is a deficient number, since it is larger than the sum of its proper divisors (1016417518559).

2111021000001 is an equidigital number, since it uses as much as digits as its factorization.

2111021000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78185962972 (or 78185962966 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2111021000001 its reverse (1000001201112), we get a palindrome (3111022201113).

The spelling of 2111021000001 in words is "two trillion, one hundred eleven billion, twenty-one million, one", and thus it is an aban number.