1121102002121 has 4 divisors (see below), whose sum is σ = 1131387341700. Its totient is φ = 1110816662544.

The previous prime is 1121102002117. The next prime is 1121102002133. The reversal of 1121102002121 is 1212002011211.

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 1018961038096 + 102140964025 = 1009436^2 + 319595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121102002121 - 2² = 1121102002117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121102002096 and 1121102002105.

It is not an unprimeable number, because it can be changed into a prime (1121102002171) 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, 5142669626 + ... + 5142669843.

It is an arithmetic number, because the mean of its divisors is an integer number (282846835425).

Almost surely, 2^{1121102002121} is an apocalyptic number.

It is an amenable number.

1121102002121 is a deficient number, since it is larger than the sum of its proper divisors (10285339579).

1121102002121 is a wasteful number, since it uses less digits than its factorization.

1121102002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10285339578.

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

Adding to 1121102002121 its reverse (1212002011211), we get a palindrome (2333104013332).

The spelling of 1121102002121 in words is "one trillion, one hundred twenty-one billion, one hundred two million, two thousand, one hundred twenty-one".