21210202102011 has 8 divisors (see below), whose sum is σ = 30455674813200. Its totient is φ = 13052432062752.

The previous prime is 21210202102007. The next prime is 21210202102027. The reversal of 21210202102011 is 11020120201212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21210202102011 - 2² = 21210202102007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210202102711) 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, 271925667936 + ... + 271925668013.

It is an arithmetic number, because the mean of its divisors is an integer number (3806959351650).

Almost surely, 2^{21210202102011} is an apocalyptic number.

21210202102011 is a deficient number, since it is larger than the sum of its proper divisors (9245472711189).

21210202102011 is a wasteful number, since it uses less digits than its factorization.

21210202102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543851335965.

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

Adding to 21210202102011 its reverse (11020120201212), we get a palindrome (32230322303223).

The spelling of 21210202102011 in words is "twenty-one trillion, two hundred ten billion, two hundred two million, one hundred two thousand, eleven".