211421111115 has 8 divisors (see below), whose sum is σ = 338273777808. Its totient is φ = 112757925920.

The previous prime is 211421111113. The next prime is 211421111123. The reversal of 211421111115 is 511111124112.

211421111115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211421111115 - 2¹ = 211421111113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211421111091 and 211421111100.

It is not an unprimeable number, because it can be changed into a prime (211421111113) 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 7 ways as a sum of consecutive naturals, for example, 7047370356 + ... + 7047370385.

It is an arithmetic number, because the mean of its divisors is an integer number (42284222226).

Almost surely, 2^211421111115 is an apocalyptic number.

211421111115 is a deficient number, since it is larger than the sum of its proper divisors (126852666693).

211421111115 is a wasteful number, since it uses less digits than its factorization.

211421111115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14094740749.

The product of its digits is 80, while the sum is 21.

Adding to 211421111115 its reverse (511111124112), we get a palindrome (722532235227).

The spelling of 211421111115 in words is "two hundred eleven billion, four hundred twenty-one million, one hundred eleven thousand, one hundred fifteen".