1210213025 has 18 divisors (see below), whose sum is σ = 1745672310. Its totient is φ = 829859520.

The previous prime is 1210213009. The next prime is 1210213063. The reversal of 1210213025 is 5203120121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 114404416 + 1095808609 = 10696^2 + 33103^2 .

It is not a de Polignac number, because 1210213025 - 2⁴ = 1210213009 is a prime.

It is a super-3 number, since 3×1210213025³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210212994 and 1210213012.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 492740 + ... + 495189.

It is an arithmetic number, because the mean of its divisors is an integer number (96981795).

Almost surely, 2^1210213025 is an apocalyptic number.

It is an amenable number.

1210213025 is a deficient number, since it is larger than the sum of its proper divisors (535459285).

1210213025 is an equidigital number, since it uses as much as digits as its factorization.

1210213025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987953 (or 987941 counting only the distinct ones).

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

The square root of 1210213025 is about 34788.1161461784. The cubic root of 1210213025 is about 1065.6647675094.

Adding to 1210213025 its reverse (5203120121), we get a palindrome (6413333146).

The spelling of 1210213025 in words is "one billion, two hundred ten million, two hundred thirteen thousand, twenty-five".