111002110122121 has 4 divisors (see below), whose sum is σ = 111002228228500. Its totient is φ = 111001992015744.

The previous prime is 111002110122109. The next prime is 111002110122131. The reversal of 111002110122121 is 121221011200111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69221335044096 + 41780775078025 = 8319936^2 + 6463805^2 .

It is a cyclic number.

It is not a de Polignac number, because 111002110122121 - 2¹³ = 111002110113929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002110122095 and 111002110122104.

It is not an unprimeable number, because it can be changed into a prime (111002110122131) 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, 57632016 + ... + 59526913.

It is an arithmetic number, because the mean of its divisors is an integer number (27750557057125).

Almost surely, 2^{111002110122121} is an apocalyptic number.

It is an amenable number.

111002110122121 is a deficient number, since it is larger than the sum of its proper divisors (118106379).

111002110122121 is an equidigital number, since it uses as much as digits as its factorization.

111002110122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118106378.

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

Adding to 111002110122121 its reverse (121221011200111), we get a palindrome (232223121322232).

The spelling of 111002110122121 in words is "one hundred eleven trillion, two billion, one hundred ten million, one hundred twenty-two thousand, one hundred twenty-one".