12211520151631 has 2 divisors, whose sum is σ = 12211520151632. Its totient is φ = 12211520151630.

The previous prime is 12211520151601. The next prime is 12211520151731. The reversal of 12211520151631 is 13615102511221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211520151631 - 2¹⁷ = 12211520020559 is a prime.

It is a super-2 number, since 2×12211520151631² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211520151593 and 12211520151602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211520151601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105760075815 + 6105760075816.

It is an arithmetic number, because the mean of its divisors is an integer number (6105760075816).

Almost surely, 2^{12211520151631} is an apocalyptic number.

12211520151631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211520151631 is an equidigital number, since it uses as much as digits as its factorization.

12211520151631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 31.

Adding to 12211520151631 its reverse (13615102511221), we get a palindrome (25826622662852).

The spelling of 12211520151631 in words is "twelve trillion, two hundred eleven billion, five hundred twenty million, one hundred fifty-one thousand, six hundred thirty-one".