2111110000021 has 32 divisors (see below), whose sum is σ = 2367247182336. Its totient is φ = 1866219264000.

The previous prime is 2111110000019. The next prime is 2111110000057. The reversal of 2111110000021 is 1200000111112.

It is a cyclic number.

It is not a de Polignac number, because 2111110000021 - 2¹ = 2111110000019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111109999962 and 2111110000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111110000081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144976581 + ... + 144991141.

It is an arithmetic number, because the mean of its divisors is an integer number (73976474448).

Almost surely, 2^{2111110000021} is an apocalyptic number.

It is an amenable number.

2111110000021 is a deficient number, since it is larger than the sum of its proper divisors (256137182315).

2111110000021 is a wasteful number, since it uses less digits than its factorization.

2111110000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16413.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 2111110000021 its reverse (1200000111112), we get a palindrome (3311110111133).

The spelling of 2111110000021 in words is "two trillion, one hundred eleven billion, one hundred ten million, twenty-one", and thus it is an aban number.