1211524532131 has 2 divisors, whose sum is σ = 1211524532132. Its totient is φ = 1211524532130.

The previous prime is 1211524532129. The next prime is 1211524532149. The reversal of 1211524532131 is 1312354251121.

It is a weak prime.

It is an emirp because it is prime and its reverse (1312354251121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211524532131 - 2¹ = 1211524532129 is a prime.

It is a super-2 number, since 2×1211524532131² (a number of 25 digits) contains 22 as substring.

Together with 1211524532129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211524532093 and 1211524532102.

It is not a weakly prime, because it can be changed into another prime (1211524532171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605762266065 + 605762266066.

It is an arithmetic number, because the mean of its divisors is an integer number (605762266066).

Almost surely, 2^{1211524532131} is an apocalyptic number.

1211524532131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211524532131 is an equidigital number, since it uses as much as digits as its factorization.

1211524532131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

Adding to 1211524532131 its reverse (1312354251121), we get a palindrome (2523878783252).

The spelling of 1211524532131 in words is "one trillion, two hundred eleven billion, five hundred twenty-four million, five hundred thirty-two thousand, one hundred thirty-one".