21120020102211 has 8 divisors (see below), whose sum is σ = 28293486646464. Its totient is φ = 14013283479720.

The previous prime is 21120020102177. The next prime is 21120020102257. The reversal of 21120020102211 is 11220102002112.

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

It is not a de Polignac number, because 21120020102211 - 2³⁰ = 21118946360387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120020802211) 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, 16682479701 + ... + 16682480966.

It is an arithmetic number, because the mean of its divisors is an integer number (3536685830808).

Almost surely, 2^{21120020102211} is an apocalyptic number.

21120020102211 is a deficient number, since it is larger than the sum of its proper divisors (7173466544253).

21120020102211 is a wasteful number, since it uses less digits than its factorization.

21120020102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33364960881.

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

Adding to 21120020102211 its reverse (11220102002112), we get a palindrome (32340122104323).

The spelling of 21120020102211 in words is "twenty-one trillion, one hundred twenty billion, twenty million, one hundred two thousand, two hundred eleven".