1020211229 has 2 divisors, whose sum is σ = 1020211230. Its totient is φ = 1020211228.

The previous prime is 1020211219. The next prime is 1020211273. The reversal of 1020211229 is 9221120201.

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., 962860900 + 57350329 = 31030^2 + 7573^2 .

It is an emirp because it is prime and its reverse (9221120201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020211229 - 2⁸ = 1020210973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020211229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020211219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510105614 + 510105615.

It is an arithmetic number, because the mean of its divisors is an integer number (510105615).

Almost surely, 2^1020211229 is an apocalyptic number.

It is an amenable number.

1020211229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020211229 is an equidigital number, since it uses as much as digits as its factorization.

1020211229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1020211229 is about 31940.7455924247. The cubic root of 1020211229 is about 1006.6921910086.

The spelling of 1020211229 in words is "one billion, twenty million, two hundred eleven thousand, two hundred twenty-nine".