1210221013 has 2 divisors, whose sum is σ = 1210221014. Its totient is φ = 1210221012.

The previous prime is 1210220989. The next prime is 1210221037. The reversal of 1210221013 is 3101220121.

It is a balanced prime because it is at equal distance from previous prime (1210220989) and next prime (1210221037).

It can be written as a sum of positive squares in only one way, i.e., 1001216164 + 209004849 = 31642^2 + 14457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210221013 - 2²⁵ = 1176666581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210220984 and 1210221002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210221043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605110506 + 605110507.

It is an arithmetic number, because the mean of its divisors is an integer number (605110507).

Almost surely, 2^1210221013 is an apocalyptic number.

It is an amenable number.

1210221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210221013 is an equidigital number, since it uses as much as digits as its factorization.

1210221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210221013 is about 34788.2309553102. The cubic root of 1210221013 is about 1065.6671121411.

Adding to 1210221013 its reverse (3101220121), we get a palindrome (4311441134).

The spelling of 1210221013 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, thirteen".