20011012120079 has 2 divisors, whose sum is σ = 20011012120080. Its totient is φ = 20011012120078.

The previous prime is 20011012120067. The next prime is 20011012120147. The reversal of 20011012120079 is 97002121011002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011012120079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011012123079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005506060039 + 10005506060040.

It is an arithmetic number, because the mean of its divisors is an integer number (10005506060040).

Almost surely, 2^{20011012120079} is an apocalyptic number.

20011012120079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011012120079 is an equidigital number, since it uses as much as digits as its factorization.

20011012120079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 20011012120079 in words is "twenty trillion, eleven billion, twelve million, one hundred twenty thousand, seventy-nine".