1021001011103 has 2 divisors, whose sum is σ = 1021001011104. Its totient is φ = 1021001011102.

The previous prime is 1021001011091. The next prime is 1021001011127. The reversal of 1021001011103 is 3011101001201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021001011103 - 2¹⁴ = 1021000994719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021001011183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510500505551 + 510500505552.

It is an arithmetic number, because the mean of its divisors is an integer number (510500505552).

Almost surely, 2^{1021001011103} is an apocalyptic number.

1021001011103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021001011103 is an equidigital number, since it uses as much as digits as its factorization.

1021001011103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1021001011103 its reverse (3011101001201), we get a palindrome (4032102012304).

The spelling of 1021001011103 in words is "one trillion, twenty-one billion, one million, eleven thousand, one hundred three".