1021354210115 has 16 divisors (see below), whose sum is σ = 1243452508416. Its totient is φ = 805208863200.

The previous prime is 1021354210073. The next prime is 1021354210139. The reversal of 1021354210115 is 5110124531201.

It is not a de Polignac number, because 1021354210115 - 2¹⁴ = 1021354193731 is a prime.

It is a Duffinian 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, 129080 + ... + 1435050.

It is an arithmetic number, because the mean of its divisors is an integer number (77715781776).

Almost surely, 2^{1021354210115} is an apocalyptic number.

1021354210115 is a deficient number, since it is larger than the sum of its proper divisors (222098298301).

1021354210115 is a wasteful number, since it uses less digits than its factorization.

1021354210115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308250.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1021354210115 its reverse (5110124531201), we get a palindrome (6131478741316).

The spelling of 1021354210115 in words is "one trillion, twenty-one billion, three hundred fifty-four million, two hundred ten thousand, one hundred fifteen".