1321020112301 has 4 divisors (see below), whose sum is σ = 1321024750272. Its totient is φ = 1321015474332.

The previous prime is 1321020112277. The next prime is 1321020112309. The reversal of 1321020112301 is 1032110201231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321020112301 - 2²⁶ = 1320953003437 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 1321020112301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321020112309) 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, 1861685 + ... + 2471418.

It is an arithmetic number, because the mean of its divisors is an integer number (330256187568).

Almost surely, 2^{1321020112301} is an apocalyptic number.

It is an amenable number.

1321020112301 is a deficient number, since it is larger than the sum of its proper divisors (4637971).

1321020112301 is an equidigital number, since it uses as much as digits as its factorization.

1321020112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637970.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321020112301 its reverse (1032110201231), we get a palindrome (2353130313532).

The spelling of 1321020112301 in words is "one trillion, three hundred twenty-one billion, twenty million, one hundred twelve thousand, three hundred one".