211000102012021 has 4 divisors (see below), whose sum is σ = 241142973728032. Its totient is φ = 180857230296012.

The previous prime is 211000102011967. The next prime is 211000102012027. The reversal of 211000102012021 is 120210201000112.

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 not a de Polignac number, because 211000102012021 - 2³³ = 210991512077429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211000102011992 and 211000102012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000102012027) 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, 15071435857995 + ... + 15071435858008.

It is an arithmetic number, because the mean of its divisors is an integer number (60285743432008).

Almost surely, 2^{211000102012021} is an apocalyptic number.

It is an amenable number.

211000102012021 is a deficient number, since it is larger than the sum of its proper divisors (30142871716011).

211000102012021 is an equidigital number, since it uses as much as digits as its factorization.

211000102012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142871716010.

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

Adding to 211000102012021 its reverse (120210201000112), we get a palindrome (331210303012133).

The spelling of 211000102012021 in words is "two hundred eleven trillion, one hundred two million, twelve thousand, twenty-one".