1020320322121 has 8 divisors (see below), whose sum is σ = 1022003447264. Its totient is φ = 1018638577440.

The previous prime is 1020320322101. The next prime is 1020320322139. The reversal of 1020320322121 is 1212230230201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020320322121 - 2⁵ = 1020320322089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020320322101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139590 + ... + 1827376.

It is an arithmetic number, because the mean of its divisors is an integer number (127750430908).

Almost surely, 2^{1020320322121} is an apocalyptic number.

It is an amenable number.

1020320322121 is a deficient number, since it is larger than the sum of its proper divisors (1683125143).

1020320322121 is a wasteful number, since it uses less digits than its factorization.

1020320322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690231.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1020320322121 its reverse (1212230230201), we get a palindrome (2232550552322).

The spelling of 1020320322121 in words is "one trillion, twenty billion, three hundred twenty million, three hundred twenty-two thousand, one hundred twenty-one".