2175061221220 has 48 divisors (see below), whose sum is σ = 4830817118400. Its totient is φ = 820327374720.

The previous prime is 2175061221217. The next prime is 2175061221271. The reversal of 2175061221220 is 221221605712.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13483435 + ... + 13643794.

It is an arithmetic number, because the mean of its divisors is an integer number (100642023300).

Almost surely, 2^{2175061221220} is an apocalyptic number.

2175061221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175061221220 is an abundant number, since it is smaller than the sum of its proper divisors (2655755897180).

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

2175061221220 is a wasteful number, since it uses less digits than its factorization.

2175061221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27127468 (or 27127466 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 2175061221220 its reverse (221221605712), we get a palindrome (2396282826932).

The spelling of 2175061221220 in words is "two trillion, one hundred seventy-five billion, sixty-one million, two hundred twenty-one thousand, two hundred twenty".