1300213021 has 4 divisors (see below), whose sum is σ = 1308189952. Its totient is φ = 1292236092.

The previous prime is 1300213009. The next prime is 1300213037. The reversal of 1300213021 is 1203120031.

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 1300213021 - 2¹¹ = 1300210973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300212992 and 1300213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300213051) 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, 3988221 + ... + 3988546.

It is an arithmetic number, because the mean of its divisors is an integer number (327047488).

Almost surely, 2^1300213021 is an apocalyptic number.

It is an amenable number.

1300213021 is a deficient number, since it is larger than the sum of its proper divisors (7976931).

1300213021 is an equidigital number, since it uses as much as digits as its factorization.

1300213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976930.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1300213021 is about 36058.4667033971. The cubic root of 1300213021 is about 1091.4524925241.

Adding to 1300213021 its reverse (1203120031), we get a palindrome (2503333052).

The spelling of 1300213021 in words is "one billion, three hundred million, two hundred thirteen thousand, twenty-one".