1011121021003 has 2 divisors, whose sum is σ = 1011121021004. Its totient is φ = 1011121021002.

The previous prime is 1011121020961. The next prime is 1011121021051. The reversal of 1011121021003 is 3001201211101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011121021003 is a prime.

It is a super-2 number, since 2×1011121021003² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011121021403) 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, 505560510501 + 505560510502.

It is an arithmetic number, because the mean of its divisors is an integer number (505560510502).

Almost surely, 2^{1011121021003} is an apocalyptic number.

1011121021003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011121021003 is an equidigital number, since it uses as much as digits as its factorization.

1011121021003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1011121021003 its reverse (3001201211101), we get a palindrome (4012322232104).

The spelling of 1011121021003 in words is "one trillion, eleven billion, one hundred twenty-one million, twenty-one thousand, three".