2111000002021 has 4 divisors (see below), whose sum is σ = 2111699243200. Its totient is φ = 2110300760844.

The previous prime is 2111000001983. The next prime is 2111000002099. The reversal of 2111000002021 is 1202000001112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2111000002021 - 2¹³ = 2110999993829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111000001989 and 2111000002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111000002421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349616061 + ... + 349622098.

It is an arithmetic number, because the mean of its divisors is an integer number (527924810800).

Almost surely, 2^{2111000002021} is an apocalyptic number.

It is an amenable number.

2111000002021 is a deficient number, since it is larger than the sum of its proper divisors (699241179).

2111000002021 is an equidigital number, since it uses as much as digits as its factorization.

2111000002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699241178.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2111000002021 its reverse (1202000001112), we get a palindrome (3313000003133).

Subtracting from 2111000002021 its reverse (1202000001112), we obtain a palindrome (909000000909).

The spelling of 2111000002021 in words is "two trillion, one hundred eleven billion, two thousand, twenty-one".