120221022121 has 4 divisors (see below), whose sum is σ = 120221856772. Its totient is φ = 120220187472.

The previous prime is 120221022107. The next prime is 120221022197. The reversal of 120221022121 is 121220122021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 68453396496 + 51767625625 = 261636^2 + 227525^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221022121 - 2⁷ = 120221021993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221022095 and 120221022104.

It is not an unprimeable number, because it can be changed into a prime (120221022521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139710 + ... + 509863.

It is an arithmetic number, because the mean of its divisors is an integer number (30055464193).

Almost surely, 2^120221022121 is an apocalyptic number.

It is an amenable number.

120221022121 is a deficient number, since it is larger than the sum of its proper divisors (834651).

120221022121 is an equidigital number, since it uses as much as digits as its factorization.

120221022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834650.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120221022121 its reverse (121220122021), we get a palindrome (241441144142).

The spelling of 120221022121 in words is "one hundred twenty billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty-one".