1301101221 has 16 divisors (see below), whose sum is σ = 1983510144. Its totient is φ = 743156544.

The previous prime is 1301101169. The next prime is 1301101223. The reversal of 1301101221 is 1221011031.

It is not a de Polignac number, because 1301101221 - 2⁹ = 1301100709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301101197 and 1301101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301101223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39511 + ... + 64523.

It is an arithmetic number, because the mean of its divisors is an integer number (123969384).

Almost surely, 2^1301101221 is an apocalyptic number.

It is an amenable number.

1301101221 is a deficient number, since it is larger than the sum of its proper divisors (682408923).

1301101221 is a wasteful number, since it uses less digits than its factorization.

1301101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27500.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1301101221 is about 36070.7807095993. The cubic root of 1301101221 is about 1091.7009665375.

Adding to 1301101221 its reverse (1221011031), we get a palindrome (2522112252).

The spelling of 1301101221 in words is "one billion, three hundred one million, one hundred one thousand, two hundred twenty-one".