20111201113979 has 2 divisors, whose sum is σ = 20111201113980. Its totient is φ = 20111201113978.

The previous prime is 20111201113963. The next prime is 20111201113999. The reversal of 20111201113979 is 97931110211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111201113979 - 2⁴ = 20111201113963 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111201113909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055600556989 + 10055600556990.

It is an arithmetic number, because the mean of its divisors is an integer number (10055600556990).

Almost surely, 2^{20111201113979} is an apocalyptic number.

20111201113979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111201113979 is an equidigital number, since it uses as much as digits as its factorization.

20111201113979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 38.

The spelling of 20111201113979 in words is "twenty trillion, one hundred eleven billion, two hundred one million, one hundred thirteen thousand, nine hundred seventy-nine".