1021134221215 has 16 divisors (see below), whose sum is σ = 1332507108672. Its totient is φ = 748074161664.

The previous prime is 1021134221203. The next prime is 1021134221267. The reversal of 1021134221215 is 5121224311201.

It is a cyclic number.

It is not a de Polignac number, because 1021134221215 - 2¹¹ = 1021134219167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021134221215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162339339 + ... + 162345628.

It is an arithmetic number, because the mean of its divisors is an integer number (83281694292).

Almost surely, 2^{1021134221215} is an apocalyptic number.

1021134221215 is a deficient number, since it is larger than the sum of its proper divisors (311372887457).

1021134221215 is a wasteful number, since it uses less digits than its factorization.

1021134221215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324685026.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1021134221215 its reverse (5121224311201), we get a palindrome (6142358532416).

The spelling of 1021134221215 in words is "one trillion, twenty-one billion, one hundred thirty-four million, two hundred twenty-one thousand, two hundred fifteen".