211000210012021 has 16 divisors (see below), whose sum is σ = 223386716367360. Its totient is φ = 198742362229440.

The previous prime is 211000210011839. The next prime is 211000210012057. The reversal of 211000210012021 is 120210012000112.

It is a cyclic number.

It is not a de Polignac number, because 211000210012021 - 2³¹ = 210998062528373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211000210011992 and 211000210012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000210712021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6759375 + ... + 21626131.

It is an arithmetic number, because the mean of its divisors is an integer number (13961669772960).

Almost surely, 2^{211000210012021} is an apocalyptic number.

It is an amenable number.

211000210012021 is a deficient number, since it is larger than the sum of its proper divisors (12386506355339).

211000210012021 is a wasteful number, since it uses less digits than its factorization.

211000210012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14871084.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211000210012021 its reverse (120210012000112), we get a palindrome (331210222012133).

The spelling of 211000210012021 in words is "two hundred eleven trillion, two hundred ten million, twelve thousand, twenty-one".