2021120233 has 6 divisors (see below), whose sum is σ = 2221562042. Its totient is φ = 1837381920.

The previous prime is 2021120221. The next prime is 2021120249. The reversal of 2021120233 is 3320211202.

It can be written as a sum of positive squares in only one way, i.e., 1489033744 + 532086489 = 38588^2 + 23067^2 .

It is not a de Polignac number, because 2021120233 - 2⁵ = 2021120201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021120333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8351616 + ... + 8351857.

Almost surely, 2^2021120233 is an apocalyptic number.

It is an amenable number.

2021120233 is a deficient number, since it is larger than the sum of its proper divisors (200441809).

2021120233 is a wasteful number, since it uses less digits than its factorization.

2021120233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16703495 (or 16703484 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2021120233 is about 44956.8708096994. The cubic root of 2021120233 is about 1264.3405005945.

Adding to 2021120233 its reverse (3320211202), we get a palindrome (5341331435).

It can be divided in two parts, 20211202 and 33, that multiplied together give a palindrome (666969666).

The spelling of 2021120233 in words is "two billion, twenty-one million, one hundred twenty thousand, two hundred thirty-three".