1021022213 has 2 divisors, whose sum is σ = 1021022214. Its totient is φ = 1021022212.

The previous prime is 1021022201. The next prime is 1021022257. The reversal of 1021022213 is 3122201201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666001249 + 355020964 = 25807^2 + 18842^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021022213 - 2¹⁴ = 1021005829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021022113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510511106 + 510511107.

It is an arithmetic number, because the mean of its divisors is an integer number (510511107).

Almost surely, 2^1021022213 is an apocalyptic number.

It is an amenable number.

1021022213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021022213 is an equidigital number, since it uses as much as digits as its factorization.

1021022213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1021022213 is about 31953.4382031105. The cubic root of 1021022213 is about 1006.9588661852.

Adding to 1021022213 its reverse (3122201201), we get a palindrome (4143223414).

It can be divided in two parts, 10210 and 22213, that added together give a palindrome (32423).

The spelling of 1021022213 in words is "one billion, twenty-one million, twenty-two thousand, two hundred thirteen".