120651721510 has 16 divisors (see below), whose sum is σ = 224661826800. Its totient is φ = 46596526816.

The previous prime is 120651721507. The next prime is 120651721537. The reversal of 120651721510 is 15127156021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208019920 + ... + 208020499.

It is an arithmetic number, because the mean of its divisors is an integer number (14041364175).

Almost surely, 2^120651721510 is an apocalyptic number.

120651721510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120651721510 is a deficient number, since it is larger than the sum of its proper divisors (104010105290).

120651721510 is a wasteful number, since it uses less digits than its factorization.

120651721510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416040455.

The product of its (nonzero) digits is 4200, while the sum is 31.

Adding to 120651721510 its reverse (15127156021), we get a palindrome (135778877531).

The spelling of 120651721510 in words is "one hundred twenty billion, six hundred fifty-one million, seven hundred twenty-one thousand, five hundred ten".