1122111022121 has 4 divisors (see below), whose sum is σ = 1188117552852. Its totient is φ = 1056104491392.

The previous prime is 1122111022117. The next prime is 1122111022133. The reversal of 1122111022121 is 1212201112211.

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 610056285721 + 512054736400 = 781061^2 + 715580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122111022121 - 2² = 1122111022117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 66006530713 = 1122111022121 / (1 + 1 + 2 + 2 + 1 + 1 + 1 + 0 + 2 + 2 + 1 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122111022121.

It is not an unprimeable number, because it can be changed into a prime (1122111022421) 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, 33003265340 + ... + 33003265373.

It is an arithmetic number, because the mean of its divisors is an integer number (297029388213).

Almost surely, 2^{1122111022121} is an apocalyptic number.

It is an amenable number.

1122111022121 is a deficient number, since it is larger than the sum of its proper divisors (66006530731).

1122111022121 is an equidigital number, since it uses as much as digits as its factorization.

1122111022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66006530730.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1122111022121 its reverse (1212201112211), we get a palindrome (2334312134332).

The spelling of 1122111022121 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".