21110011022211 has 16 divisors (see below), whose sum is σ = 29247827266560. Its totient is φ = 13527120085920.

The previous prime is 21110011022207. The next prime is 21110011022237. The reversal of 21110011022211 is 11222011001112.

It is a happy number.

It is not a de Polignac number, because 21110011022211 - 2² = 21110011022207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110011022291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544025005 + ... + 544063806.

It is an arithmetic number, because the mean of its divisors is an integer number (1827989204160).

Almost surely, 2^{21110011022211} is an apocalyptic number.

21110011022211 is a deficient number, since it is larger than the sum of its proper divisors (8137816244349).

21110011022211 is a wasteful number, since it uses less digits than its factorization.

21110011022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088089066.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21110011022211 its reverse (11222011001112), we get a palindrome (32332022023323).

The spelling of 21110011022211 in words is "twenty-one trillion, one hundred ten billion, eleven million, twenty-two thousand, two hundred eleven".