21100232122211 has 8 divisors (see below), whose sum is σ = 23038227347904. Its totient is φ = 19165535614120.

The previous prime is 21100232122199. The next prime is 21100232122241. The reversal of 21100232122211 is 11222123200112.

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 21100232122211 - 2⁶ = 21100232122147 is a prime.

It is a super-2 number, since 2×21100232122211² (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 (21100232122241) 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, 824666021 + ... + 824691606.

It is an arithmetic number, because the mean of its divisors is an integer number (2879778418488).

Almost surely, 2^{21100232122211} is an apocalyptic number.

21100232122211 is a deficient number, since it is larger than the sum of its proper divisors (1937995225693).

21100232122211 is a wasteful number, since it uses less digits than its factorization.

21100232122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649358801.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21100232122211 its reverse (11222123200112), we get a palindrome (32322355322323).

The spelling of 21100232122211 in words is "twenty-one trillion, one hundred billion, two hundred thirty-two million, one hundred twenty-two thousand, two hundred eleven".