102421111 has 8 divisors (see below), whose sum is σ = 111540240. Its totient is φ = 93479232.

The previous prime is 102421079. The next prime is 102421133. The reversal of 102421111 is 111124201.

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

It is a cyclic number.

It is not a de Polignac number, because 102421111 - 2⁵ = 102421079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102421091 and 102421100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43105 + ... + 45418.

It is an arithmetic number, because the mean of its divisors is an integer number (13942530).

Almost surely, 2^102421111 is an apocalyptic number.

102421111 is a deficient number, since it is larger than the sum of its proper divisors (9119129).

102421111 is an equidigital number, since it uses as much as digits as its factorization.

102421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88625.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 102421111 is about 10120.3315657146. The cubic root of 102421111 is about 467.8749863937.

Adding to 102421111 its reverse (111124201), we get a palindrome (213545312).

The spelling of 102421111 in words is "one hundred two million, four hundred twenty-one thousand, one hundred eleven".