20111321340233 has 2 divisors, whose sum is σ = 20111321340234. Its totient is φ = 20111321340232.

The previous prime is 20111321340119. The next prime is 20111321340247. The reversal of 20111321340233 is 33204312311102.

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., 19577819650489 + 533501689744 = 4424683^2 + 730412^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111321340233 - 2¹⁰ = 20111321339209 is a prime.

It is a super-2 number, since 2×20111321340233² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20111321040233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055660670116 + 10055660670117.

It is an arithmetic number, because the mean of its divisors is an integer number (10055660670117).

Almost surely, 2^{20111321340233} is an apocalyptic number.

It is an amenable number.

20111321340233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111321340233 is an equidigital number, since it uses as much as digits as its factorization.

20111321340233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20111321340233 its reverse (33204312311102), we get a palindrome (53315633651335).

The spelling of 20111321340233 in words is "twenty trillion, one hundred eleven billion, three hundred twenty-one million, three hundred forty thousand, two hundred thirty-three".