120021405133552 has 40 divisors (see below), whose sum is σ = 251532490796496. Its totient is φ = 55150466044416.

The previous prime is 120021405133549. The next prime is 120021405133577. The reversal of 120021405133552 is 255331504120021.

It is a super-2 number, since 2×120021405133552² (a number of 29 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 7 ways as a sum of consecutive naturals, for example, 1270935133 + ... + 1271029564.

Almost surely, 2^{120021405133552} is an apocalyptic number.

It is an amenable number.

120021405133552 is an abundant number, since it is smaller than the sum of its proper divisors (131511085662944).

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

120021405133552 is a wasteful number, since it uses less digits than its factorization.

120021405133552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541964945 (or 2541964939 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 120021405133552 its reverse (255331504120021), we get a palindrome (375352909253573).

The spelling of 120021405133552 in words is "one hundred twenty trillion, twenty-one billion, four hundred five million, one hundred thirty-three thousand, five hundred fifty-two".