1301031221 has 8 divisors (see below), whose sum is σ = 1502222400. Its totient is φ = 1103672448.

The previous prime is 1301031217. The next prime is 1301031239. The reversal of 1301031221 is 1221301031.

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 1301031221 - 2² = 1301031217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301031196 and 1301031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301033221) 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, 957371 + ... + 958728.

It is an arithmetic number, because the mean of its divisors is an integer number (187777800).

Almost surely, 2^1301031221 is an apocalyptic number.

It is an amenable number.

1301031221 is a deficient number, since it is larger than the sum of its proper divisors (201191179).

1301031221 is an equidigital number, since it uses as much as digits as its factorization.

1301031221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916203.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1301031221 is about 36069.8103820910. The cubic root of 1301031221 is about 1091.6813881381.

Adding to 1301031221 its reverse (1221301031), we get a palindrome (2522332252).

The spelling of 1301031221 in words is "one billion, three hundred one million, thirty-one thousand, two hundred twenty-one".