21021102002011 has 8 divisors (see below), whose sum is σ = 22975625718144. Its totient is φ = 19146354764160.

The previous prime is 21021102001967. The next prime is 21021102002041. The reversal of 21021102002011 is 11020020112012.

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 21021102002011 - 2⁷ = 21021102001883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21021102001982 and 21021102002000.

It is not an unprimeable number, because it can be changed into a prime (21021102002041) 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, 19944119020 + ... + 19944120073.

It is an arithmetic number, because the mean of its divisors is an integer number (2871953214768).

Almost surely, 2^{21021102002011} is an apocalyptic number.

21021102002011 is a deficient number, since it is larger than the sum of its proper divisors (1954523716133).

21021102002011 is a wasteful number, since it uses less digits than its factorization.

21021102002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39888239141.

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

Adding to 21021102002011 its reverse (11020020112012), we get a palindrome (32041122114023).

The spelling of 21021102002011 in words is "twenty-one trillion, twenty-one billion, one hundred two million, two thousand, eleven".