211131133021 has 8 divisors (see below), whose sum is σ = 223556471424. Its totient is φ = 198706445760.

The previous prime is 211131133001. The next prime is 211131133027. The reversal of 211131133021 is 120331131112.

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 211131133021 - 2²¹ = 211129035869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211131133021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131133027) 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, 609516 + ... + 890938.

It is an arithmetic number, because the mean of its divisors is an integer number (27944558928).

Almost surely, 2^211131133021 is an apocalyptic number.

It is an amenable number.

211131133021 is a deficient number, since it is larger than the sum of its proper divisors (12425338403).

211131133021 is a wasteful number, since it uses less digits than its factorization.

211131133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325571.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 211131133021 its reverse (120331131112), we get a palindrome (331462264133).

The spelling of 211131133021 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred thirty-three thousand, twenty-one".