1021454683129 has 4 divisors (see below), whose sum is σ = 1022340594676. Its totient is φ = 1020568771584.

The previous prime is 1021454683111. The next prime is 1021454683153. The reversal of 1021454683129 is 9213864541201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 385684471225 + 635770211904 = 621035^2 + 797352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021454683129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021454083129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442954044 + ... + 442956349.

It is an arithmetic number, because the mean of its divisors is an integer number (255585148669).

Almost surely, 2^{1021454683129} is an apocalyptic number.

It is an amenable number.

1021454683129 is a deficient number, since it is larger than the sum of its proper divisors (885911547).

1021454683129 is an equidigital number, since it uses as much as digits as its factorization.

1021454683129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885911546.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 1021454683129 in words is "one trillion, twenty-one billion, four hundred fifty-four million, six hundred eighty-three thousand, one hundred twenty-nine".