21121022010211 has 8 divisors (see below), whose sum is σ = 21681257172080. Its totient is φ = 20563925421312.

The previous prime is 21121022010203. The next prime is 21121022010251. The reversal of 21121022010211 is 11201022012112.

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 21121022010211 - 2³ = 21121022010203 is a prime.

It is a super-2 number, since 2×21121022010211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21121022010251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784629606 + ... + 784656523.

It is an arithmetic number, because the mean of its divisors is an integer number (2710157146510).

Almost surely, 2^{21121022010211} is an apocalyptic number.

21121022010211 is a deficient number, since it is larger than the sum of its proper divisors (560235161869).

21121022010211 is a wasteful number, since it uses less digits than its factorization.

21121022010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569286485.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21121022010211 its reverse (11201022012112), we get a palindrome (32322044022323).

The spelling of 21121022010211 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, ten thousand, two hundred eleven".