111010211201121 has 4 divisors (see below), whose sum is σ = 148013614934832. Its totient is φ = 74006807467412.

The previous prime is 111010211201093. The next prime is 111010211201161. The reversal of 111010211201121 is 121102112010111.

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 111010211201121 - 2¹³ = 111010211192929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111010211201121.

It is not an unprimeable number, because it can be changed into a prime (111010211201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18501701866851 + ... + 18501701866856.

It is an arithmetic number, because the mean of its divisors is an integer number (37003403733708).

Almost surely, 2^{111010211201121} is an apocalyptic number.

It is an amenable number.

111010211201121 is a deficient number, since it is larger than the sum of its proper divisors (37003403733711).

111010211201121 is an equidigital number, since it uses as much as digits as its factorization.

111010211201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37003403733710.

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

Adding to 111010211201121 its reverse (121102112010111), we get a palindrome (232112323211232).

The spelling of 111010211201121 in words is "one hundred eleven trillion, ten billion, two hundred eleven million, two hundred one thousand, one hundred twenty-one".