10021110111211 has 4 divisors (see below), whose sum is σ = 10084938838192. Its totient is φ = 9957281384232.

The previous prime is 10021110111161. The next prime is 10021110111217. The reversal of 10021110111211 is 11211101112001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10021110111211 - 2¹¹ = 10021110109163 is a prime.

It is a super-2 number, since 2×10021110111211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021110111191 and 10021110111200.

It is not an unprimeable number, because it can be changed into a prime (10021110111217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31914363255 + ... + 31914363568.

It is an arithmetic number, because the mean of its divisors is an integer number (2521234709548).

Almost surely, 2^{10021110111211} is an apocalyptic number.

10021110111211 is a deficient number, since it is larger than the sum of its proper divisors (63828726981).

10021110111211 is an equidigital number, since it uses as much as digits as its factorization.

10021110111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63828726980.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10021110111211 its reverse (11211101112001), we get a palindrome (21232211223212).

The spelling of 10021110111211 in words is "ten trillion, twenty-one billion, one hundred ten million, one hundred eleven thousand, two hundred eleven".