12212011501 has 2 divisors, whose sum is σ = 12212011502. Its totient is φ = 12212011500.

The previous prime is 12212011459. The next prime is 12212011547. The reversal of 12212011501 is 10511021221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10089198025 + 2122813476 = 100445^2 + 46074^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212011501 - 2⁹ = 12212010989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212011601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106005750 + 6106005751.

It is an arithmetic number, because the mean of its divisors is an integer number (6106005751).

Almost surely, 2^12212011501 is an apocalyptic number.

It is an amenable number.

12212011501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212011501 is an equidigital number, since it uses as much as digits as its factorization.

12212011501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 12212011501 its reverse (10511021221), we get a palindrome (22723032722).

The spelling of 12212011501 in words is "twelve billion, two hundred twelve million, eleven thousand, five hundred one".