21442227227180 has 48 divisors (see below), whose sum is σ = 45494302432320. Its totient is φ = 8488205856768.

The previous prime is 21442227227143. The next prime is 21442227227209. The reversal of 21442227227180 is 8172272224412.

It is a super-2 number, since 2×21442227227180² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69672881 + ... + 69979959.

It is an arithmetic number, because the mean of its divisors is an integer number (947797967340).

Almost surely, 2^{21442227227180} is an apocalyptic number.

21442227227180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442227227180 is an abundant number, since it is smaller than the sum of its proper divisors (24052075205140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21442227227180 is a wasteful number, since it uses less digits than its factorization.

21442227227180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343178 (or 343176 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 44.

The spelling of 21442227227180 in words is "twenty-one trillion, four hundred forty-two billion, two hundred twenty-seven million, two hundred twenty-seven thousand, one hundred eighty".