1303231002121 has 4 divisors (see below), whose sum is σ = 1303241195412. Its totient is φ = 1303220808832.

The previous prime is 1303231002119. The next prime is 1303231002181. The reversal of 1303231002121 is 1212001323031.

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 792920792521 + 510310209600 = 890461^2 + 714360^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303231002121 - 2¹ = 1303231002119 is a prime.

It is a super-3 number, since 3×1303231002121³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303231002181) 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, 4902400 + ... + 5161393.

It is an arithmetic number, because the mean of its divisors is an integer number (325810298853).

Almost surely, 2^{1303231002121} is an apocalyptic number.

It is an amenable number.

1303231002121 is a deficient number, since it is larger than the sum of its proper divisors (10193291).

1303231002121 is a wasteful number, since it uses less digits than its factorization.

1303231002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193290.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1303231002121 its reverse (1212001323031), we get a palindrome (2515232325152).

The spelling of 1303231002121 in words is "one trillion, three hundred three billion, two hundred thirty-one million, two thousand, one hundred twenty-one".