21210200011049 has 64 divisors (see below), whose sum is σ = 26337695784960. Its totient is φ = 16675371348480.

The previous prime is 21210200010971. The next prime is 21210200011051. The reversal of 21210200011049 is 94011000201212.

It is a cyclic number.

It is not a de Polignac number, because 21210200011049 - 2⁸ = 21210200010793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210200011069) 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 63 ways as a sum of consecutive naturals, for example, 704572532 + ... + 704602634.

It is an arithmetic number, because the mean of its divisors is an integer number (411526496640).

Almost surely, 2^{21210200011049} is an apocalyptic number.

It is an amenable number.

21210200011049 is a deficient number, since it is larger than the sum of its proper divisors (5127495773911).

21210200011049 is a wasteful number, since it uses less digits than its factorization.

21210200011049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31150.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21210200011049 in words is "twenty-one trillion, two hundred ten billion, two hundred million, eleven thousand, forty-nine".