1011222101121 has 4 divisors (see below), whose sum is σ = 1348296134832. Its totient is φ = 674148067412.

The previous prime is 1011222101117. The next prime is 1011222101129. The reversal of 1011222101121 is 1211012221101.

It is a happy number.

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 1011222101121 - 2² = 1011222101117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011222101121.

It is not an unprimeable number, because it can be changed into a prime (1011222101129) 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, 168537016851 + ... + 168537016856.

It is an arithmetic number, because the mean of its divisors is an integer number (337074033708).

Almost surely, 2^{1011222101121} is an apocalyptic number.

It is an amenable number.

1011222101121 is a deficient number, since it is larger than the sum of its proper divisors (337074033711).

1011222101121 is an equidigital number, since it uses as much as digits as its factorization.

1011222101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337074033710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1011222101121 its reverse (1211012221101), we get a palindrome (2222234322222).

The spelling of 1011222101121 in words is "one trillion, eleven billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".