2110001111021 has 4 divisors (see below), whose sum is σ = 2234118823452. Its totient is φ = 1985883398592.

The previous prime is 2110001111011. The next prime is 2110001111033. The reversal of 2110001111021 is 1201111000112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1767998374921 + 342002736100 = 1329661^2 + 584810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110001111021 - 2³⁸ = 1835123204077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110001110993 and 2110001111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110001111011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62058856190 + ... + 62058856223.

It is an arithmetic number, because the mean of its divisors is an integer number (558529705863).

Almost surely, 2^{2110001111021} is an apocalyptic number.

It is an amenable number.

2110001111021 is a deficient number, since it is larger than the sum of its proper divisors (124117712431).

2110001111021 is a wasteful number, since it uses less digits than its factorization.

2110001111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124117712430.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2110001111021 its reverse (1201111000112), we get a palindrome (3311112111133).

The spelling of 2110001111021 in words is "two trillion, one hundred ten billion, one million, one hundred eleven thousand, twenty-one".