220111019979 has 4 divisors (see below), whose sum is σ = 293481359976. Its totient is φ = 146740679984.

The previous prime is 220111019971. The next prime is 220111020007. The reversal of 220111019979 is 979910111022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220111019979 - 2³ = 220111019971 is a prime.

It is a super-2 number, since 2×220111019979² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220111019979.

It is not an unprimeable number, because it can be changed into a prime (220111019971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36685169994 + ... + 36685169999.

It is an arithmetic number, because the mean of its divisors is an integer number (73370339994).

Almost surely, 2^220111019979 is an apocalyptic number.

220111019979 is a deficient number, since it is larger than the sum of its proper divisors (73370339997).

220111019979 is an equidigital number, since it uses as much as digits as its factorization.

220111019979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73370339996.

The product of its (nonzero) digits is 20412, while the sum is 42.

The spelling of 220111019979 in words is "two hundred twenty billion, one hundred eleven million, nineteen thousand, nine hundred seventy-nine".