111402312121 has 4 divisors (see below), whose sum is σ = 111696250000. Its totient is φ = 111108374244.

The previous prime is 111402312103. The next prime is 111402312127. The reversal of 111402312121 is 121213204111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111402312121 - 2²⁹ = 110865441209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111402312127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146968371 + ... + 146969128.

It is an arithmetic number, because the mean of its divisors is an integer number (27924062500).

Almost surely, 2^111402312121 is an apocalyptic number.

It is an amenable number.

111402312121 is a deficient number, since it is larger than the sum of its proper divisors (293937879).

111402312121 is an equidigital number, since it uses as much as digits as its factorization.

111402312121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293937878.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111402312121 its reverse (121213204111), we get a palindrome (232615516232).

The spelling of 111402312121 in words is "one hundred eleven billion, four hundred two million, three hundred twelve thousand, one hundred twenty-one".