1200213125 has 20 divisors (see below), whose sum is σ = 1524421404. Its totient is φ = 944400000.

The previous prime is 1200213089. The next prime is 1200213127. The reversal of 1200213125 is 5213120021.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 1194462721 + 5750404 = 34561^2 + 2398^2 .

It is not a de Polignac number, because 1200213125 - 2²⁶ = 1133104261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200213127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22385 + ... + 53865.

Almost surely, 2^1200213125 is an apocalyptic number.

It is an amenable number.

1200213125 is a deficient number, since it is larger than the sum of its proper divisors (324208279).

1200213125 is an frugal number, since it uses more digits than its factorization.

1200213125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31562 (or 31547 counting only the distinct ones).

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

The square root of 1200213125 is about 34644.0922092065. The cubic root of 1200213125 is about 1062.7214763218.

Adding to 1200213125 its reverse (5213120021), we get a palindrome (6413333146).

The spelling of 1200213125 in words is "one billion, two hundred million, two hundred thirteen thousand, one hundred twenty-five".