21000011101102 has 16 divisors (see below), whose sum is σ = 34407318667392. Its totient is φ = 9533330664120.

The previous prime is 21000011101051. The next prime is 21000011101129. The reversal of 21000011101102 is 20110111000012.

It is a super-2 number, since 2×21000011101102² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 606428658 + ... + 606463285.

It is an arithmetic number, because the mean of its divisors is an integer number (2150457416712).

Almost surely, 2^{21000011101102} is an apocalyptic number.

21000011101102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21000011101102 is a deficient number, since it is larger than the sum of its proper divisors (13407307566290).

21000011101102 is a wasteful number, since it uses less digits than its factorization.

21000011101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212892743.

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

Adding to 21000011101102 its reverse (20110111000012), we get a palindrome (41110122101114).

The spelling of 21000011101102 in words is "twenty-one trillion, eleven million, one hundred one thousand, one hundred two".