2021111002105 has 8 divisors (see below), whose sum is σ = 2611897295112. Its totient is φ = 1492512739968.

The previous prime is 2021111002033. The next prime is 2021111002139. The reversal of 2021111002105 is 5012001111202.

It can be written as a sum of positive squares in 4 ways, for example, as 419805509776 + 1601305492329 = 647924^2 + 1265427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021111002105 - 2¹⁵ = 2021110969337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15547007644 + ... + 15547007773.

It is an arithmetic number, because the mean of its divisors is an integer number (326487161889).

Almost surely, 2^{2021111002105} is an apocalyptic number.

It is an amenable number.

2021111002105 is a deficient number, since it is larger than the sum of its proper divisors (590786293007).

2021111002105 is a wasteful number, since it uses less digits than its factorization.

2021111002105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31094015435.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 2021111002105 its reverse (5012001111202), we get a palindrome (7033112113307).

The spelling of 2021111002105 in words is "two trillion, twenty-one billion, one hundred eleven million, two thousand, one hundred five".