20011229207 has 2 divisors, whose sum is σ = 20011229208. Its totient is φ = 20011229206.

The previous prime is 20011229177. The next prime is 20011229209. The reversal of 20011229207 is 70292211002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011229207 - 2³⁰ = 18937487383 is a prime.

Together with 20011229209, 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 (20011229209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005614603 + 10005614604.

It is an arithmetic number, because the mean of its divisors is an integer number (10005614604).

Almost surely, 2^20011229207 is an apocalyptic number.

20011229207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011229207 is an equidigital number, since it uses as much as digits as its factorization.

20011229207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 20011229207 in words is "twenty billion, eleven million, two hundred twenty-nine thousand, two hundred seven".