120221121 has 16 divisors (see below), whose sum is σ = 163272704. Its totient is φ = 78672384.

The previous prime is 120221117. The next prime is 120221137. The reversal of 120221121 is 121122021.

It is not a de Polignac number, because 120221121 - 2² = 120221117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221097 and 120221106.

It is not an unprimeable number, because it can be changed into a prime (120221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35331 + ... + 38583.

It is an arithmetic number, because the mean of its divisors is an integer number (10204544).

Almost surely, 2^120221121 is an apocalyptic number.

It is an amenable number.

120221121 is a deficient number, since it is larger than the sum of its proper divisors (43051583).

120221121 is a wasteful number, since it uses less digits than its factorization.

120221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 120221121 is about 10964.5392516056. The cubic root of 120221121 is about 493.5451907919.

Adding to 120221121 its reverse (121122021), we get a palindrome (241343142).

The spelling of 120221121 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-one".