21120220221179 has 2 divisors, whose sum is σ = 21120220221180. Its totient is φ = 21120220221178.

The previous prime is 21120220221143. The next prime is 21120220221251. The reversal of 21120220221179 is 97112202202112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21120220221179 - 2³² = 21115925253883 is a prime.

It is not a weakly prime, because it can be changed into another prime (21120220224179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560110110589 + 10560110110590.

It is an arithmetic number, because the mean of its divisors is an integer number (10560110110590).

Almost surely, 2^{21120220221179} is an apocalyptic number.

21120220221179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120220221179 is an equidigital number, since it uses as much as digits as its factorization.

21120220221179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 21120220221179 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, one hundred seventy-nine".