1121303213121 has 32 divisors (see below), whose sum is σ = 1899444994048. Its totient is φ = 572377389120.

The previous prime is 1121303213119. The next prime is 1121303213159. The reversal of 1121303213121 is 1213123031211.

It is not a de Polignac number, because 1121303213121 - 2¹ = 1121303213119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1121303213101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66238921 + ... + 66255846.

It is an arithmetic number, because the mean of its divisors is an integer number (59357656064).

Almost surely, 2^{1121303213121} is an apocalyptic number.

It is an amenable number.

1121303213121 is a deficient number, since it is larger than the sum of its proper divisors (778141780927).

1121303213121 is a wasteful number, since it uses less digits than its factorization.

1121303213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132494821.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1121303213121 its reverse (1213123031211), we get a palindrome (2334426244332).

The spelling of 1121303213121 in words is "one trillion, one hundred twenty-one billion, three hundred three million, two hundred thirteen thousand, one hundred twenty-one".