21021151120204 has 12 divisors (see below), whose sum is σ = 36787691433528. Its totient is φ = 10510382139200.

The previous prime is 21021151120201. The next prime is 21021151120237. The reversal of 21021151120204 is 40202115112012.

21021151120204 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×21021151120204³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21021151120201) 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, 48110557 + ... + 48545524.

It is an arithmetic number, because the mean of its divisors is an integer number (3065640952794).

Almost surely, 2^{21021151120204} is an apocalyptic number.

It is an amenable number.

21021151120204 is a deficient number, since it is larger than the sum of its proper divisors (15766540313324).

21021151120204 is a wasteful number, since it uses less digits than its factorization.

21021151120204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96710456 (or 96710454 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 21021151120204 its reverse (40202115112012), we get a palindrome (61223266232216).

The spelling of 21021151120204 in words is "twenty-one trillion, twenty-one billion, one hundred fifty-one million, one hundred twenty thousand, two hundred four".