120221633 has 4 divisors (see below), whose sum is σ = 137396160. Its totient is φ = 103047108.

The previous prime is 120221597. The next prime is 120221639. The reversal of 120221633 is 336122021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336122021 = 3929 ⋅85549.

It is a cyclic number.

It is not a de Polignac number, because 120221633 - 2⁸ = 120221377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120221639) 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, 8587253 + ... + 8587266.

It is an arithmetic number, because the mean of its divisors is an integer number (34349040).

Almost surely, 2^120221633 is an apocalyptic number.

It is an amenable number.

120221633 is a deficient number, since it is larger than the sum of its proper divisors (17174527).

120221633 is an equidigital number, since it uses as much as digits as its factorization.

120221633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17174526.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 120221633 is about 10964.5625995751. The cubic root of 120221633 is about 493.5458914308.

Adding to 120221633 its reverse (336122021), we get a palindrome (456343654).

It can be divided in two parts, 1202 and 21633, that multiplied together give a triangular number (26002866 = T₇₂₁₁).

The spelling of 120221633 in words is "one hundred twenty million, two hundred twenty-one thousand, six hundred thirty-three".