12011213101 has 2 divisors, whose sum is σ = 12011213102. Its totient is φ = 12011213100.

The previous prime is 12011213089. The next prime is 12011213107. The reversal of 12011213101 is 10131211021.

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., 11178832900 + 832380201 = 105730^2 + 28851^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011213101 - 2³¹ = 9863729453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011213107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606550 + 6005606551.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606551).

Almost surely, 2^12011213101 is an apocalyptic number.

It is an amenable number.

12011213101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011213101 is an equidigital number, since it uses as much as digits as its factorization.

12011213101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12011213101 its reverse (10131211021), we get a palindrome (22142424122).

The spelling of 12011213101 in words is "twelve billion, eleven million, two hundred thirteen thousand, one hundred one".