1212525131 has 2 divisors, whose sum is σ = 1212525132. Its totient is φ = 1212525130.

The previous prime is 1212525089. The next prime is 1212525169. The reversal of 1212525131 is 1315252121.

It is a strong prime.

It is an emirp because it is prime and its reverse (1315252121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212525131 - 2¹⁴ = 1212508747 is a prime.

It is a super-2 number, since 2×1212525131² = 2940434386613134322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212525097 and 1212525106.

It is not a weakly prime, because it can be changed into another prime (1212521131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606262565 + 606262566.

It is an arithmetic number, because the mean of its divisors is an integer number (606262566).

Almost surely, 2^1212525131 is an apocalyptic number.

1212525131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212525131 is an equidigital number, since it uses as much as digits as its factorization.

1212525131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 1212525131 is about 34821.3315512202. The cubic root of 1212525131 is about 1066.3429848719.

Adding to 1212525131 its reverse (1315252121), we get a palindrome (2527777252).

It can be divided in two parts, 121 and 2525131, that added together give a palindrome (2525252).

The spelling of 1212525131 in words is "one billion, two hundred twelve million, five hundred twenty-five thousand, one hundred thirty-one".