1212002125 has 8 divisors (see below), whose sum is σ = 1512578808. Its totient is φ = 969601600.

The previous prime is 1212002117. The next prime is 1212002149. The reversal of 1212002125 is 5212002121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 373494276 + 838507849 = 19326^2 + 28957^2 .

It is not a de Polignac number, because 1212002125 - 2³ = 1212002117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212002099 and 1212002108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4847884 + ... + 4848133.

It is an arithmetic number, because the mean of its divisors is an integer number (189072351).

Almost surely, 2^1212002125 is an apocalyptic number.

It is an amenable number.

1212002125 is a deficient number, since it is larger than the sum of its proper divisors (300576683).

1212002125 is an frugal number, since it uses more digits than its factorization.

1212002125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696032 (or 9696022 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1212002125 is about 34813.8208905601. The cubic root of 1212002125 is about 1066.1896453740.

Adding to 1212002125 its reverse (5212002121), we get a palindrome (6424004246).

The spelling of 1212002125 in words is "one billion, two hundred twelve million, two thousand, one hundred twenty-five".