20011322331029 has 2 divisors, whose sum is σ = 20011322331030. Its totient is φ = 20011322331028.

The previous prime is 20011322330941. The next prime is 20011322331047. The reversal of 20011322331029 is 92013322311002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11530792072804 + 8480530258225 = 3395702^2 + 2912135^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011322331029 - 2²⁰ = 20011321282453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20011322330992 and 20011322331010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011322331089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005661165514 + 10005661165515.

It is an arithmetic number, because the mean of its divisors is an integer number (10005661165515).

Almost surely, 2^{20011322331029} is an apocalyptic number.

It is an amenable number.

20011322331029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011322331029 is an equidigital number, since it uses as much as digits as its factorization.

20011322331029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 20011322331029 in words is "twenty trillion, eleven billion, three hundred twenty-two million, three hundred thirty-one thousand, twenty-nine".