120221053521 has 8 divisors (see below), whose sum is σ = 167264074560. Its totient is φ = 76662700752.

The previous prime is 120221053493. The next prime is 120221053573. The reversal of 120221053521 is 125350122021.

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

It is not a de Polignac number, because 120221053521 - 2⁹ = 120221053009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120221053491 and 120221053500.

It is not an unprimeable number, because it can be changed into a prime (120221054521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871166986 + ... + 871167123.

It is an arithmetic number, because the mean of its divisors is an integer number (20908009320).

Almost surely, 2^120221053521 is an apocalyptic number.

It is an amenable number.

120221053521 is a deficient number, since it is larger than the sum of its proper divisors (47043021039).

120221053521 is a wasteful number, since it uses less digits than its factorization.

120221053521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742334135.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 120221053521 its reverse (125350122021), we get a palindrome (245571175542).

The spelling of 120221053521 in words is "one hundred twenty billion, two hundred twenty-one million, fifty-three thousand, five hundred twenty-one".