1121220121013 has 2 divisors, whose sum is σ = 1121220121014. Its totient is φ = 1121220121012.

The previous prime is 1121220120973. The next prime is 1121220121037. The reversal of 1121220121013 is 3101210221211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 709270521124 + 411949599889 = 842182^2 + 641833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121220121013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121220120982 and 1121220121000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121220123013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560610060506 + 560610060507.

It is an arithmetic number, because the mean of its divisors is an integer number (560610060507).

Almost surely, 2^{1121220121013} is an apocalyptic number.

It is an amenable number.

1121220121013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121220121013 is an equidigital number, since it uses as much as digits as its factorization.

1121220121013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1121220121013 its reverse (3101210221211), we get a palindrome (4222430342224).

The spelling of 1121220121013 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, thirteen".