211021332111131 has 4 divisors (see below), whose sum is σ = 211082373865272. Its totient is φ = 210960290356992.

The previous prime is 211021332111127. The next prime is 211021332111143. The reversal of 211021332111131 is 131111233120112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211021332111131 - 2² = 211021332111127 is a prime.

It is a super-2 number, since 2×211021332111131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211021332111097 and 211021332111106.

It is not an unprimeable number, because it can be changed into a prime (211021332111181) 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, 30520871885 + ... + 30520878798.

It is an arithmetic number, because the mean of its divisors is an integer number (52770593466318).

Almost surely, 2^{211021332111131} is an apocalyptic number.

211021332111131 is a deficient number, since it is larger than the sum of its proper divisors (61041754141).

211021332111131 is an equidigital number, since it uses as much as digits as its factorization.

211021332111131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61041754140.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 211021332111131 its reverse (131111233120112), we get a palindrome (342132565231243).

The spelling of 211021332111131 in words is "two hundred eleven trillion, twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, one hundred thirty-one".