2021120654 has 8 divisors (see below), whose sum is σ = 3464778288. Its totient is φ = 866194560.

The previous prime is 2021120641. The next prime is 2021120657. The reversal of 2021120654 is 4560211202.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021120657) 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 3 ways as a sum of consecutive naturals, for example, 72182867 + ... + 72182894.

It is an arithmetic number, because the mean of its divisors is an integer number (433097286).

Almost surely, 2^2021120654 is an apocalyptic number.

2021120654 is a deficient number, since it is larger than the sum of its proper divisors (1443657634).

2021120654 is a wasteful number, since it uses less digits than its factorization.

2021120654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144365770.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2021120654 is about 44956.8754919645. The cubic root of 2021120654 is about 1264.3405883820.

Adding to 2021120654 its reverse (4560211202), we get a palindrome (6581331856).

The spelling of 2021120654 in words is "two billion, twenty-one million, one hundred twenty thousand, six hundred fifty-four".