12021320211101 has 2 divisors, whose sum is σ = 12021320211102. Its totient is φ = 12021320211100.

The previous prime is 12021320211083. The next prime is 12021320211107. The reversal of 12021320211101 is 10111202312021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6079553205625 + 5941767005476 = 2465675^2 + 2437574^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021320211101 - 2²⁶ = 12021253102237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12021320211101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021320211107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010660105550 + 6010660105551.

It is an arithmetic number, because the mean of its divisors is an integer number (6010660105551).

Almost surely, 2^{12021320211101} is an apocalyptic number.

It is an amenable number.

12021320211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021320211101 is an equidigital number, since it uses as much as digits as its factorization.

12021320211101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12021320211101 its reverse (10111202312021), we get a palindrome (22132522523122).

The spelling of 12021320211101 in words is "twelve trillion, twenty-one billion, three hundred twenty million, two hundred eleven thousand, one hundred one".