1121001202121 has 4 divisors (see below), whose sum is σ = 1121780217600. Its totient is φ = 1120222186644.

The previous prime is 1121001202109. The next prime is 1121001202147. The reversal of 1121001202121 is 1212021001211.

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 1121001202121 - 2¹⁸ = 1121000939977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121001202096 and 1121001202105.

It is not an unprimeable number, because it can be changed into a prime (1121001232121) 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, 389505581 + ... + 389508458.

It is an arithmetic number, because the mean of its divisors is an integer number (280445054400).

Almost surely, 2^{1121001202121} is an apocalyptic number.

It is an amenable number.

1121001202121 is a deficient number, since it is larger than the sum of its proper divisors (779015479).

1121001202121 is an equidigital number, since it uses as much as digits as its factorization.

1121001202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779015478.

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

Adding to 1121001202121 its reverse (1212021001211), we get a palindrome (2333022203332).

The spelling of 1121001202121 in words is "one trillion, one hundred twenty-one billion, one million, two hundred two thousand, one hundred twenty-one".