1622220201720 has 48 divisors (see below), whose sum is σ = 5272215656760. Its totient is φ = 432592053696.

The previous prime is 1622220201713. The next prime is 1622220201743. The reversal of 1622220201720 is 271020222261.

1622220201720 is a `hidden beast` number, since 1 + 622 + 2 + 2 + 0 + 2 + 0 + 17 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2253083254 + ... + 2253083973.

Almost surely, 2^{1622220201720} is an apocalyptic number.

1622220201720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622220201720 is an abundant number, since it is smaller than the sum of its proper divisors (3649995455040).

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

1622220201720 is a wasteful number, since it uses less digits than its factorization.

1622220201720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506167244 (or 4506167237 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 1622220201720 its reverse (271020222261), we get a palindrome (1893240423981).

The spelling of 1622220201720 in words is "one trillion, six hundred twenty-two billion, two hundred twenty million, two hundred one thousand, seven hundred twenty".