421111101111 has 4 divisors (see below), whose sum is σ = 561481468152. Its totient is φ = 280740734072.

The previous prime is 421111101101. The next prime is 421111101121. The reversal of 421111101111 is 111101111124.

421111101111 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (421111101101) and next prime (421111101121).

It is a cyclic number.

It is not a de Polignac number, because 421111101111 - 2²⁶ = 421043992247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421111101101) 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, 70185183516 + ... + 70185183521.

It is an arithmetic number, because the mean of its divisors is an integer number (140370367038).

Almost surely, 2^421111101111 is an apocalyptic number.

421111101111 is a deficient number, since it is larger than the sum of its proper divisors (140370367041).

421111101111 is a wasteful number, since it uses less digits than its factorization.

421111101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140370367040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 421111101111 its reverse (111101111124), we get a palindrome (532212212235).

The spelling of 421111101111 in words is "four hundred twenty-one billion, one hundred eleven million, one hundred one thousand, one hundred eleven".