1121202001021 has 2 divisors, whose sum is σ = 1121202001022. Its totient is φ = 1121202001020.

The previous prime is 1121202000967. The next prime is 1121202001037. The reversal of 1121202001021 is 1201002021211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 665185416921 + 456016584100 = 815589^2 + 675290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121202001021 - 2³⁷ = 983763047549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121202000992 and 1121202001010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121202001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560601000510 + 560601000511.

It is an arithmetic number, because the mean of its divisors is an integer number (560601000511).

Almost surely, 2^{1121202001021} is an apocalyptic number.

It is an amenable number.

1121202001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121202001021 is an equidigital number, since it uses as much as digits as its factorization.

1121202001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121202001021 its reverse (1201002021211), we get a palindrome (2322204022232).

The spelling of 1121202001021 in words is "one trillion, one hundred twenty-one billion, two hundred two million, one thousand, twenty-one".