2101211000321 has 4 divisors (see below), whose sum is σ = 2127808608000. Its totient is φ = 2074613392644.

The previous prime is 2101211000281. The next prime is 2101211000323. The reversal of 2101211000321 is 1230001121012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101211000321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101211000296 and 2101211000305.

It is not an unprimeable number, because it can be changed into a prime (2101211000323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13298803721 + ... + 13298803878.

It is an arithmetic number, because the mean of its divisors is an integer number (531952152000).

Almost surely, 2^{2101211000321} is an apocalyptic number.

It is an amenable number.

2101211000321 is a deficient number, since it is larger than the sum of its proper divisors (26597607679).

2101211000321 is an equidigital number, since it uses as much as digits as its factorization.

2101211000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26597607678.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2101211000321 its reverse (1230001121012), we get a palindrome (3331212121333).

The spelling of 2101211000321 in words is "two trillion, one hundred one billion, two hundred eleven million, three hundred twenty-one", and thus it is an aban number.