21102012002011 has 8 divisors (see below), whose sum is σ = 22371444285824. Its totient is φ = 19869374856960.

The previous prime is 21102012002003. The next prime is 21102012002017. The reversal of 21102012002011 is 11020021020112.

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 21102012002011 - 2³ = 21102012002003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21102012001982 and 21102012002000.

It is not an unprimeable number, because it can be changed into a prime (21102012002017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9198783510 + ... + 9198785803.

It is an arithmetic number, because the mean of its divisors is an integer number (2796430535728).

Almost surely, 2^{21102012002011} is an apocalyptic number.

21102012002011 is a deficient number, since it is larger than the sum of its proper divisors (1269432283813).

21102012002011 is a wasteful number, since it uses less digits than its factorization.

21102012002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18397569381.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21102012002011 its reverse (11020021020112), we get a palindrome (32122033022123).

The spelling of 21102012002011 in words is "twenty-one trillion, one hundred two billion, twelve million, two thousand, eleven".