21022002102111 has 16 divisors (see below), whose sum is σ = 29588146717440. Its totient is φ = 13239441895680.

The previous prime is 21022002102107. The next prime is 21022002102259. The reversal of 21022002102111 is 11120120022012.

It is not a de Polignac number, because 21022002102111 - 2² = 21022002102107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022002100111) 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 15 ways as a sum of consecutive naturals, for example, 522369475 + ... + 522409716.

It is an arithmetic number, because the mean of its divisors is an integer number (1849259169840).

Almost surely, 2^{21022002102111} is an apocalyptic number.

21022002102111 is a deficient number, since it is larger than the sum of its proper divisors (8566144615329).

21022002102111 is a wasteful number, since it uses less digits than its factorization.

21022002102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044779566.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21022002102111 its reverse (11120120022012), we get a palindrome (32142122124123).

The spelling of 21022002102111 in words is "twenty-one trillion, twenty-two billion, two million, one hundred two thousand, one hundred eleven".