120721237121445 has 8 divisors (see below), whose sum is σ = 193153979394336. Its totient is φ = 64384659798096.

The previous prime is 120721237121423. The next prime is 120721237121453. The reversal of 120721237121445 is 544121732127021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120721237121445 - 2⁵ = 120721237121413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120721237121397 and 120721237121406.

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, 4024041237367 + ... + 4024041237396.

It is an arithmetic number, because the mean of its divisors is an integer number (24144247424292).

Almost surely, 2^{120721237121445} is an apocalyptic number.

120721237121445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120721237121445 is a deficient number, since it is larger than the sum of its proper divisors (72432742272891).

120721237121445 is an equidigital number, since it uses as much as digits as its factorization.

120721237121445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8048082474771.

The product of its (nonzero) digits is 188160, while the sum is 42.

Adding to 120721237121445 its reverse (544121732127021), we get a palindrome (664842969248466).

The spelling of 120721237121445 in words is "one hundred twenty trillion, seven hundred twenty-one billion, two hundred thirty-seven million, one hundred twenty-one thousand, four hundred forty-five".