2175061221240 has 64 divisors (see below), whose sum is σ = 6909018003360. Its totient is φ = 545897717760.

The previous prime is 2175061221217. The next prime is 2175061221271. The reversal of 2175061221240 is 421221605712.

It is a super-2 number, since 2×2175061221240² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533101201 + ... + 533105280.

Almost surely, 2^{2175061221240} is an apocalyptic number.

2175061221240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175061221240 is an abundant number, since it is smaller than the sum of its proper divisors (4733956782120).

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

2175061221240 is a wasteful number, since it uses less digits than its factorization.

2175061221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066206512 (or 1066206508 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

Adding to 2175061221240 its reverse (421221605712), we get a palindrome (2596282826952).

The spelling of 2175061221240 in words is "two trillion, one hundred seventy-five billion, sixty-one million, two hundred twenty-one thousand, two hundred forty".