1121012002121 has 6 divisors (see below), whose sum is σ = 1232186746266. Its totient is φ = 1019101820000.

The previous prime is 1121012002079. The next prime is 1121012002189. The reversal of 1121012002121 is 1212002101211.

It can be written as a sum of positive squares in only one way, i.e., 597125562121 + 523886440000 = 772739^2 + 723800^2 .

It is not a de Polignac number, because 1121012002121 - 2¹⁸ = 1121011739977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121012002096 and 1121012002105.

It is not an unprimeable number, because it can be changed into a prime (1121012005121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4632280880 + ... + 4632281121.

It is an arithmetic number, because the mean of its divisors is an integer number (205364457711).

Almost surely, 2^{1121012002121} is an apocalyptic number.

1121012002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121012002121 is a deficient number, since it is larger than the sum of its proper divisors (111174744145).

1121012002121 is an equidigital number, since it uses as much as digits as its factorization.

1121012002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264562023 (or 9264562012 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121012002121 its reverse (1212002101211), we get a palindrome (2333014103332).

The spelling of 1121012002121 in words is "one trillion, one hundred twenty-one billion, twelve million, two thousand, one hundred twenty-one".