211203130021 has 8 divisors (see below), whose sum is σ = 227457918464. Its totient is φ = 194949540720.

The previous prime is 211203130007. The next prime is 211203130043. The reversal of 211203130021 is 120031302112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211203130021 - 2²³ = 211194741413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211203129977 and 211203130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211203130051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84256 + ... + 655366.

It is an arithmetic number, because the mean of its divisors is an integer number (28432239808).

Almost surely, 2^211203130021 is an apocalyptic number.

It is an amenable number.

211203130021 is a deficient number, since it is larger than the sum of its proper divisors (16254788443).

211203130021 is a wasteful number, since it uses less digits than its factorization.

211203130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599571.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211203130021 its reverse (120031302112), we get a palindrome (331234432133).

The spelling of 211203130021 in words is "two hundred eleven billion, two hundred three million, one hundred thirty thousand, twenty-one".