1300111221 has 4 divisors (see below), whose sum is σ = 1733481632. Its totient is φ = 866740812.

The previous prime is 1300111213. The next prime is 1300111223. The reversal of 1300111221 is 1221110031.

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 not a de Polignac number, because 1300111221 - 2³ = 1300111213 is a prime.

It is a super-2 number, since 2×1300111221² = 3380578373940221682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300111197 and 1300111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300111223) 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, 216685201 + ... + 216685206.

It is an arithmetic number, because the mean of its divisors is an integer number (433370408).

Almost surely, 2^1300111221 is an apocalyptic number.

It is an amenable number.

1300111221 is a deficient number, since it is larger than the sum of its proper divisors (433370411).

1300111221 is an equidigital number, since it uses as much as digits as its factorization.

1300111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433370410.

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

The square root of 1300111221 is about 36057.0550794155. The cubic root of 1300111221 is about 1091.4240067396.

Adding to 1300111221 its reverse (1221110031), we get a palindrome (2521221252).

The spelling of 1300111221 in words is "one billion, three hundred million, one hundred eleven thousand, two hundred twenty-one".