1121202102121 has 4 divisors (see below), whose sum is σ = 1121387829892. Its totient is φ = 1121016374352.

The previous prime is 1121202102073. The next prime is 1121202102169. The reversal of 1121202102121 is 1212012021211.

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

It is an interprime number because it is at equal distance from previous prime (1121202102073) and next prime (1121202102169).

It can be written as a sum of positive squares in 2 ways, for example, as 446070373225 + 675131728896 = 667885^2 + 821664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121202102121 - 2²⁷ = 1121067884393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121202102095 and 1121202102104.

It is not an unprimeable number, because it can be changed into a prime (1121202102521) 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, 92854830 + ... + 92866903.

It is an arithmetic number, because the mean of its divisors is an integer number (280346957473).

Almost surely, 2^{1121202102121} is an apocalyptic number.

It is an amenable number.

1121202102121 is a deficient number, since it is larger than the sum of its proper divisors (185727771).

1121202102121 is an equidigital number, since it uses as much as digits as its factorization.

1121202102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185727770.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1121202102121 its reverse (1212012021211), we get a palindrome (2333214123332).

The spelling of 1121202102121 in words is "one trillion, one hundred twenty-one billion, two hundred two million, one hundred two thousand, one hundred twenty-one".