20211120000021 has 32 divisors (see below), whose sum is σ = 28558415628288. Its totient is φ = 12687481794240.

The previous prime is 20211119999963. The next prime is 20211120000023. The reversal of 20211120000021 is 12000002111202.

It is not a de Polignac number, because 20211120000021 - 2⁷ = 20211119999893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211119999961 and 20211120000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211120000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5538675 + ... + 8432031.

It is an arithmetic number, because the mean of its divisors is an integer number (892450488384).

Almost surely, 2^{20211120000021} is an apocalyptic number.

It is an amenable number.

20211120000021 is a deficient number, since it is larger than the sum of its proper divisors (8347295628267).

20211120000021 is a wasteful number, since it uses less digits than its factorization.

20211120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894961.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20211120000021 its reverse (12000002111202), we get a palindrome (32211122111223).

The spelling of 20211120000021 in words is "twenty trillion, two hundred eleven billion, one hundred twenty million, twenty-one", and thus it is an aban number.