88421111 has 4 divisors (see below), whose sum is σ = 88460112. Its totient is φ = 88382112.

The previous prime is 88421101. The next prime is 88421141. The reversal of 88421111 is 11112488.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88421111 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88421101) 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, 15875 + ... + 20708.

It is an arithmetic number, because the mean of its divisors is an integer number (22115028).

Almost surely, 2^88421111 is an apocalyptic number.

88421111 is a deficient number, since it is larger than the sum of its proper divisors (39001).

88421111 is a wasteful number, since it uses less digits than its factorization.

88421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39000.

The product of its digits is 512, while the sum is 26.

The square root of 88421111 is about 9403.2500232632. The cubic root of 88421111 is about 445.5043912530.

Adding to 88421111 its reverse (11112488), we get a palindrome (99533599).

The spelling of 88421111 in words is "eighty-eight million, four hundred twenty-one thousand, one hundred eleven".