20011000011229 has 2 divisors, whose sum is σ = 20011000011230. Its totient is φ = 20011000011228.

The previous prime is 20011000011137. The next prime is 20011000011241. The reversal of 20011000011229 is 92211000011002.

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., 19968368085604 + 42631925625 = 4468598^2 + 206475^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011000011229 - 2¹³ = 20011000003037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011000311229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005500005614 + 10005500005615.

It is an arithmetic number, because the mean of its divisors is an integer number (10005500005615).

Almost surely, 2^{20011000011229} is an apocalyptic number.

It is an amenable number.

20011000011229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011000011229 is an equidigital number, since it uses as much as digits as its factorization.

20011000011229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 20011000011229 in words is "twenty trillion, eleven billion, eleven thousand, two hundred twenty-nine".