2021120221004 has 12 divisors (see below), whose sum is σ = 3651055883328. Its totient is φ = 977961397200.

The previous prime is 2021120220983. The next prime is 2021120221007. The reversal of 2021120221004 is 4001220211202.

It is not an unprimeable number, because it can be changed into a prime (2021120221007) 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, 8149678187 + ... + 8149678434.

It is an arithmetic number, because the mean of its divisors is an integer number (304254656944).

Almost surely, 2^{2021120221004} is an apocalyptic number.

It is an amenable number.

2021120221004 is a deficient number, since it is larger than the sum of its proper divisors (1629935662324).

2021120221004 is a wasteful number, since it uses less digits than its factorization.

2021120221004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16299356656 (or 16299356654 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021120221004 its reverse (4001220211202), we get a palindrome (6022340432206).

The spelling of 2021120221004 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, four".