1021530412145 has 16 divisors (see below), whose sum is σ = 1230726147840. Its totient is φ = 813967056000.

The previous prime is 1021530412129. The next prime is 1021530412153. The reversal of 1021530412145 is 5412140351201.

It is a happy number.

It is not a de Polignac number, because 1021530412145 - 2⁴ = 1021530412129 is a prime.

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, 3148526 + ... + 3457784.

It is an arithmetic number, because the mean of its divisors is an integer number (76920384240).

Almost surely, 2^{1021530412145} is an apocalyptic number.

It is an amenable number.

1021530412145 is a deficient number, since it is larger than the sum of its proper divisors (209195735695).

1021530412145 is a wasteful number, since it uses less digits than its factorization.

1021530412145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311896.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1021530412145 its reverse (5412140351201), we get a palindrome (6433670763346).

The spelling of 1021530412145 in words is "one trillion, twenty-one billion, five hundred thirty million, four hundred twelve thousand, one hundred forty-five".