21211011022211 has 8 divisors (see below), whose sum is σ = 22330141082880. Its totient is φ = 20092157067528.

The previous prime is 21211011022207. The next prime is 21211011022297. The reversal of 21211011022211 is 11222011011212.

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 21211011022211 - 2² = 21211011022207 is a prime.

It is a super-2 number, since 2×21211011022211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21211011022211.

It is not an unprimeable number, because it can be changed into a prime (21211011022111) 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, 68868791 + ... + 69176096.

It is an arithmetic number, because the mean of its divisors is an integer number (2791267635360).

Almost surely, 2^{21211011022211} is an apocalyptic number.

21211011022211 is a deficient number, since it is larger than the sum of its proper divisors (1119130060669).

21211011022211 is a wasteful number, since it uses less digits than its factorization.

21211011022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138052993.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21211011022211 its reverse (11222011011212), we get a palindrome (32433022033423).

The spelling of 21211011022211 in words is "twenty-one trillion, two hundred eleven billion, eleven million, twenty-two thousand, two hundred eleven".