21002114011 has 32 divisors (see below), whose sum is σ = 22257075456. Its totient is φ = 19796400000.

The previous prime is 21002113997. The next prime is 21002114017. The reversal of 21002114011 is 11041120012.

It is a cyclic number.

It is not a de Polignac number, because 21002114011 - 2¹³ = 21002105819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21002113982 and 21002114000.

It is not an unprimeable number, because it can be changed into a prime (21002114017) 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, 74212276 + ... + 74212558.

It is an arithmetic number, because the mean of its divisors is an integer number (695533608).

Almost surely, 2^21002114011 is an apocalyptic number.

21002114011 is a deficient number, since it is larger than the sum of its proper divisors (1254961445).

21002114011 is a wasteful number, since it uses less digits than its factorization.

21002114011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

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

Adding to 21002114011 its reverse (11041120012), we get a palindrome (32043234023).

The spelling of 21002114011 in words is "twenty-one billion, two million, one hundred fourteen thousand, eleven".