120221053515 has 12 divisors (see below), whose sum is σ = 208383159504. Its totient is φ = 64117895184.

The previous prime is 120221053493. The next prime is 120221053573. The reversal of 120221053515 is 515350122021.

120221053515 is a `hidden beast` number, since 1 + 20 + 22 + 105 + 3 + 515 = 666.

It is not a de Polignac number, because 120221053515 - 2⁵ = 120221053483 is a prime.

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, 1335789439 + ... + 1335789528.

It is an arithmetic number, because the mean of its divisors is an integer number (17365263292).

Almost surely, 2^120221053515 is an apocalyptic number.

120221053515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120221053515 is a deficient number, since it is larger than the sum of its proper divisors (88162105989).

120221053515 is a wasteful number, since it uses less digits than its factorization.

120221053515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671578978 (or 2671578975 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 120221053515 its reverse (515350122021), we get a palindrome (635571175536).

The spelling of 120221053515 in words is "one hundred twenty billion, two hundred twenty-one million, fifty-three thousand, five hundred fifteen".