1021102011205 has 16 divisors (see below), whose sum is σ = 1264982284800. Its totient is φ = 790447250880.

The previous prime is 1021102011101. The next prime is 1021102011211. The reversal of 1021102011205 is 5021102011201.

It is not a de Polignac number, because 1021102011205 - 2⁹ = 1021102010693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148511 + ... + 1833379.

It is an arithmetic number, because the mean of its divisors is an integer number (79061392800).

Almost surely, 2^{1021102011205} is an apocalyptic number.

It is an amenable number.

1021102011205 is a deficient number, since it is larger than the sum of its proper divisors (243880273595).

1021102011205 is an equidigital number, since it uses as much as digits as its factorization.

1021102011205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694524.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1021102011205 its reverse (5021102011201), we get a palindrome (6042204022406).

The spelling of 1021102011205 in words is "one trillion, twenty-one billion, one hundred two million, eleven thousand, two hundred five".