1012021213 has 16 divisors (see below), whose sum is σ = 1163229696. Its totient is φ = 862490160.

The previous prime is 1012021201. The next prime is 1012021259. The reversal of 1012021213 is 3121202101.

It is not a de Polignac number, because 1012021213 - 2⁹ = 1012020701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012021193 and 1012021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012025213) 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, 1797270 + ... + 1797832.

It is an arithmetic number, because the mean of its divisors is an integer number (72701856).

Almost surely, 2^1012021213 is an apocalyptic number.

It is an amenable number.

1012021213 is a deficient number, since it is larger than the sum of its proper divisors (151208483).

1012021213 is an equidigital number, since it uses as much as digits as its factorization.

1012021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

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

The square root of 1012021213 is about 31812.2808518974. The cubic root of 1012021213 is about 1003.9911207635.

Adding to 1012021213 its reverse (3121202101), we get a palindrome (4133223314).

The spelling of 1012021213 in words is "one billion, twelve million, twenty-one thousand, two hundred thirteen".