1120003121021 has 2 divisors, whose sum is σ = 1120003121022. Its totient is φ = 1120003121020.

The previous prime is 1120003121009. The next prime is 1120003121023. The reversal of 1120003121021 is 1201213000211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 899957692921 + 220045428100 = 948661^2 + 469090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120003121021 - 2²⁶ = 1119936012157 is a prime.

Together with 1120003121023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120003120987 and 1120003121005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120003121023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560001560510 + 560001560511.

It is an arithmetic number, because the mean of its divisors is an integer number (560001560511).

Almost surely, 2^{1120003121021} is an apocalyptic number.

It is an amenable number.

1120003121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120003121021 is an equidigital number, since it uses as much as digits as its factorization.

1120003121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1120003121021 its reverse (1201213000211), we get a palindrome (2321216121232).

The spelling of 1120003121021 in words is "one trillion, one hundred twenty billion, three million, one hundred twenty-one thousand, twenty-one".