21211120211110 has 8 divisors (see below), whose sum is σ = 38180016380016. Its totient is φ = 8484448084440.

The previous prime is 21211120211101. The next prime is 21211120211111. The reversal of 21211120211110 is 1111202111212.

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

It is a super-2 number, since 2×21211120211110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211120211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060556010546 + ... + 1060556010565.

It is an arithmetic number, because the mean of its divisors is an integer number (4772502047502).

Almost surely, 2^{21211120211110} is an apocalyptic number.

21211120211110 is a deficient number, since it is larger than the sum of its proper divisors (16968896168906).

21211120211110 is a wasteful number, since it uses less digits than its factorization.

21211120211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121112021118.

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

Adding to 21211120211110 its reverse (1111202111212), we get a palindrome (22322322322322).

The spelling of 21211120211110 in words is "twenty-one trillion, two hundred eleven billion, one hundred twenty million, two hundred eleven thousand, one hundred ten".