21110022101211 has 8 divisors (see below), whose sum is σ = 28146722572800. Its totient is φ = 14073334848552.

The previous prime is 21110022101173. The next prime is 21110022101221. The reversal of 21110022101211 is 11210122001112.

It is a happy number.

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

It is not a de Polignac number, because 21110022101211 - 2⁷ = 21110022101083 is a prime.

It is a super-2 number, since 2×21110022101211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110022101221) 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, 1363566 + ... + 6639228.

It is an arithmetic number, because the mean of its divisors is an integer number (3518340321600).

Almost surely, 2^{21110022101211} is an apocalyptic number.

21110022101211 is a deficient number, since it is larger than the sum of its proper divisors (7036700471589).

21110022101211 is a wasteful number, since it uses less digits than its factorization.

21110022101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609465.

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

Adding to 21110022101211 its reverse (11210122001112), we get a palindrome (32320144102323).

The spelling of 21110022101211 in words is "twenty-one trillion, one hundred ten billion, twenty-two million, one hundred one thousand, two hundred eleven".