20311110220229 has 2 divisors, whose sum is σ = 20311110220230. Its totient is φ = 20311110220228.

The previous prime is 20311110220217. The next prime is 20311110220277. The reversal of 20311110220229 is 92202201111302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14004472485025 + 6306637735204 = 3742255^2 + 2511302^2 .

It is a cyclic number.

It is not a de Polignac number, because 20311110220229 - 2⁸ = 20311110219973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20311110220198 and 20311110220207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311110220529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155555110114 + 10155555110115.

It is an arithmetic number, because the mean of its divisors is an integer number (10155555110115).

Almost surely, 2^{20311110220229} is an apocalyptic number.

It is an amenable number.

20311110220229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311110220229 is an equidigital number, since it uses as much as digits as its factorization.

20311110220229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 20311110220229 in words is "twenty trillion, three hundred eleven billion, one hundred ten million, two hundred twenty thousand, two hundred twenty-nine".