1020125213 has 2 divisors, whose sum is σ = 1020125214. Its totient is φ = 1020125212.

The previous prime is 1020125179. The next prime is 1020125221. The reversal of 1020125213 is 3125210201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 662650564 + 357474649 = 25742^2 + 18907^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020125213 - 2²⁰ = 1019076637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020125191 and 1020125200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020125243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510062606 + 510062607.

It is an arithmetic number, because the mean of its divisors is an integer number (510062607).

Almost surely, 2^1020125213 is an apocalyptic number.

It is an amenable number.

1020125213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020125213 is an equidigital number, since it uses as much as digits as its factorization.

1020125213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1020125213 is about 31939.3990707402. The cubic root of 1020125213 is about 1006.6638981523.

Adding to 1020125213 its reverse (3125210201), we get a palindrome (4145335414).

The spelling of 1020125213 in words is "one billion, twenty million, one hundred twenty-five thousand, two hundred thirteen".