20133211031447 has 2 divisors, whose sum is σ = 20133211031448. Its totient is φ = 20133211031446.

The previous prime is 20133211031431. The next prime is 20133211031449. The reversal of 20133211031447 is 74413011233102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20133211031447 - 2⁴ = 20133211031431 is a prime.

Together with 20133211031449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133211031449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066605515723 + 10066605515724.

It is an arithmetic number, because the mean of its divisors is an integer number (10066605515724).

Almost surely, 2^{20133211031447} is an apocalyptic number.

20133211031447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133211031447 is an equidigital number, since it uses as much as digits as its factorization.

20133211031447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 20133211031447 its reverse (74413011233102), we get a palindrome (94546222264549).

The spelling of 20133211031447 in words is "twenty trillion, one hundred thirty-three billion, two hundred eleven million, thirty-one thousand, four hundred forty-seven".